If there is a 100.000:1 Chance for every viewer to ever sit in a cockpit, then there are at least 7 people who watched the video that should remember...
As a local note, not only did Tex do that famous barrel roll over Lake Washingon, but 60 years later a misguided airline (non pilot ground type) employee 'borrowed' a Horizon/Alaska prop jet and did loop-de-loops over Puget Sound until he ran out of fuel and crashed on an island.
None of these popular aircraft channels have went over that flight. Maybe it was only a big story because I live in Seattle, but I'd like to see a breakdown of that flight. I mean it looked like he skimmed the water just about coming out of his maneuvers. I get they probably don't want to give attention to such a stunt, but that flight still fascinates me all these years later.
I agree. When all you can see through your window is ground or sky, you have no good basis for comparison, as you don't have a horizon to compare to. They hog all the horizon up in the cockpit.
@@HappyBeezerStudios Actually if you think about it, a "proper" 1G roll technically varies up to as much as 2G on the airplane itself. In order for you to feel 1G through the floor of the airplane while fully inverted you'd need to be doing 2G to counteract the force of gravity. Sure you can make it "feel" like gravity spins with you but the plane has to tolerate twice that. A true 1G roll in terms of the aircraft would have you feeling weightless when you're inverted.
@@HappyBeezerStudios I disagree. If anyone had their windows open, seeing the horizon corkscrew around, invert, and hopefully un-invert all in the absence of horizontal force would be terrifying. If you were more slowly rolled, the feeling of dangling by your seatbelt would at least feel like the plane was being supported on its current heading. It would be nauseating as your inner ear would be telling you (quite rightly) that you were accelerating at insane speeds in an uncontrolled way directly at the ground, coupled with presumably freaky shuddering and groaning as all manner of structural and aerodynamic chaos was happening to the airframe around you. I'm thinking people would be passing out and vomiting immediately.
Thank You for the very instructive video Captain! There was also another incident in Brazil (Brasilia) on Sept 29 1988, when a VASP 737 was hijacked. The Captain not only rolled the aircraft into a barrell roll, but also went into a vertical spin before the assailant was destabilized. Subsequently, he recovered the aircraft and landed safely without the help of the Co-Pilot, who unfortunately was killed by the assailant. The Commander, Fernando Murilo is considered a Brazilian National Hero.
You should get the C5 galaxy. I tried it with a 100Ton load had to reorganize the apache helicopter and the M1 i was carrying. Sort of a messy job. Also a crew member accidentally dropped a grenade while holding it by the pin when we rolled over. It wasn't a good day at the backyard.
@@kaneo1 And that is exactly what that bloody experienced and talented Boeing 707 test pilot did. Textbook roll. Load factor one, and perfectly coordinated. How many pilots are cleared to do that in an airliner? One? Two?
Tonight I was flying with Ryanair and after landing I asked the flight attendant if I could visit the cockpit, just like you recommended in one of your videos! So the pilots agreed and we had a nice little chat! I forgot to take a picture but they switched on the cockpit lights for me for some Christmas mood!
Boeing test pilot “Tex” Johnson Barrel rolled the Boeing Dash 80 in 1955 over Seattle. He held positive G the whole time. Boeing’s Boss at the time told him not to do it again. He was a top pilot so could pull it off.
It's not well known but rolling the 707 was practiced, I think the day before, on a test flight over the Olympic Peninsula. It wasn't a hazardous impulsive act. Johnson had already done it as testing the flight characteristics of the plane. He knew before showing off over Sea Fair that it was a safe maneuver for the plane. I would love to have been there but was only 7 yo and living in NC at the heyday of Sea Fair and the hydroplane boat races.
I think the issue was that Boeing didn’t want to freak out the public who would be flying in the plane when it entered service. Most modern commercial jets should be able to perform a barrel roll in level flight without any problems. I believe the Alaska Air plane (an MD 80, Flt 261) that crashed off of California attempted, and may have succeeded for time, to fly inverted.
Seeing Mr. Hörnfeldt get serious and focused instantaneously at 18:27 then yank something with such force in the middle console to roll it out to level somehow made me proud. I don't know why, he is not my kid or anything but that swift taking of control made me say "that's my boy!"... Interesting.
Long ago when I was a little kid (like 5 years old) I got to visit the cockpit during flight, I was asking the pilot about all the buttons on the panel, he was very patient with me but looking back on it now I'm not so sure about the button that he said turned the plane upside down :D Thanks for giving me a great memory, anon pilot. Merry xmas all!!
I'm glad you mentioned Tex Johnston's airleron roll in 1955, on Boeing's 367-80 prototype jetliner, which would eventually become the first generation Boeing 707. From what I read about it, after he landed, I believe the CEO or President of Boeing at the time asked him (not the exact words) "What did you think you were doing up there?" And Tex's response was "I was selling an airplane". :-)
@Michael The American Patriot : No, Tex Johnston didn't do an aileron roll, he did a barrel roll. It is very different. A barrel roll is a +1G maneuver, an aileron roll is a +1/-1G maneuver (at least).
In 1990, while on deployment in the Persian Gulf, I witnessed an RAF Nimrod do a 360 degree barrel roll flying at low altitude! It was the coolest thing I had seen up to that point aviation-wise! Got to share this story with an old RAF Crew Chief in Thailand this year. He worked on the Nimrod and totally confirmed that not only was it possible, he actually was in one that did it himself!
@@testboga5991The airframe of the Nimrod is based on an airliner, the first jet airliner in fact. Nimrod is a heavily modified version of the De Havilland Comet in fact.
You are an excellent communicator. You use the minimum amount of language and are very precise and descriptive with everything you say. You explain terms without over describing or going off on tangents. The only flaw I have ever noticed with your excellent communication (and I haven't checked to ensure I am correct in this), is that in this video I don't remember you giving a quick explanation of what trimming was. Usually when you introduce a term you give a quick explanation. Question: Do Pilots think in terms of the controls they use without thinking what flaps or ailerons they are using or what these are doing? Could someone learn how to fly a plane without understanding how the flaps etc. work? I know how to steer a car but don't know what processes are involved in making steering happen. I presume when something goes wrong, that is when it is useful to have an understanding of what is involved. Excellent educational videos with excellent communication.
Thank you for your excellent feedback, the answer is, yes. I could teach you to fly without explaining the theory behind. The problem would come when you need to do something I haven’t shown you, that’s where knowledge is important,
Piers Trindal I’m an amateur pilot and I never think about what the ailerons or rudders are doing. However, when wing tipping (because the instructor wants you to), you gotta push the rudder in the direction you’re tipping,which intuitively would make you think you’re steering yourself into the ground!
@@MentourPilot You're brilliant. Not just any pilot will come and explain all these things about being a pilot and enjoy it too, but I think you might be wrong about one thing. There was once not too long ago a tv program series which tells the true stories of plain crashes, the pilots who flew them, from take off till point of failure, what the cause was and when contact was lost and who were on board. They get the info on the black boxes and the controller(s) who had contact with them. They actors play the rolls of what happened and the true evidence get shown on video clips and photos as well as pictures of the real pilots who died. Two pilots who flew an A320 had to come in for landing but the ground below had a lot high rocky mountains and the airport was on the other side. They were already too low and had to work their way through the mountains and thus had make a lot of sudden fast steep turns to avoid crash into the mountains. Both pilots fought for all the lives on board when the pilots saw an opening in the mountain which the turn that to make to the left caused the plane role over a complete 90 degrees. They had to get the plane upright immediately so completed the role as soon as they could and made it through the mountains to the runway. It was only because they were lower than they should have been. They were supposed to come over the mountains.
@@Pantbera, the actors play the 'roles', not 'rolls'. The plane 'rolls', it does not 'role'. But I give it to you that you were perfectly logical in that inversion.
I was fortunate enough to know Tex Johnson and flew with him when our company was flight testing VG's for the PA31-350 back in 1993, he was a true gentleman.
Well, you’re not alone my friend. While flying doesn’t actually terrify me, it does make me nervous and anxious. You guys know that cockpit voice warning that says “terrain ahead, terrain ahead, pull up, pull up,” yes? Well some of my instincts are convinced flying is both dangerous and unnatural despite the evidence otherwise. So when I approach and aircraft I intend to board and ride on I have the biological version of “aircraft ahead, aircraft ahead, turn back, turn back.” 😄 The difference is that I can override its objections, board, sit, belt up and stay quiet for the entire flight. It is unpleasant though as I’m so on edge with white knuckle syndrome, I’m probably going to leave finger shaped grooves in the seats somewhere. 😉
The most dramatic banking of a plane I was a passenger on was when flying out of Shenzhen. It was incredible watching the wing dip down towards the white waves and the harbour below.
Protip from the WWII combat pilots: when you get past 60 or 70 degrees, you have to use the rudder to maintain altitude. Once you're at 90 degrees, the rudder is effectively your aileron.
I wondered about this too, he doesn't mention top rudder input during the high bank maneuver to keep the nose up. An Airbus lost a vertical stab and rudder and crashed due to overly aggressive rudder input by the co-pilot, so maybe there is a structural risk to the tail in aircraft of a certain size when using the rudder/v stab this way.
Speaking of ww2 fighters…. I had the immense pleasure of flying in a AT-6 trainer fighter…and amongst other things, I did the peel off you see in movies when there’s a squadron of planes needing to dive bomb (forget actual term)…. And it stays 1g all the time… ie youd never know your on such a steep angle
Speaking as someone who has flown and experienced “white knuckle syndrome” nearly every time, it’s great to have the opportunity to know what’s really going on in the cockpit. Learning more about both the aerodynamics (the physical forces acting on the aircraft) and the airplane controls (what the pilot is doing with the aircraft) helps to mentally combine the two to better understand what’s actually happening when we fly. Thanks for the flying lesson! ✈️🌐😁
Just for completion, most airbus aircrafts and the larger aircrafts, like the Boeing 747 do not have a cable connection to the ailerons (they have for the THS (trimmable horizontal stabilizer) though. Instead they are controlled by electric signals and have one or more additional hydraulic systems that will work/start operating if the engines would fail.
Jeffrey, I’m glad watching these videos ease your “white knuckle syndrome” when flying. I probably have a pretty good idea of how you felt. I seem to have some instinct deep inside that doesn’t like flying. It’s like… ah you’ve heard the “terrain ahead, terrain ahead, pull up, pull up” warning in these videos? Well, when I’m approaching an airplane I actually intend to ride on, I’m pretty much experiencing. “Aircraft ahead, aircraft ahead, turn back, turn back.” I suppose it’s not all bad, because I can override it and make myself board, sit, put the seatbelt on and stay quiet for the entire flight. It’s not pleasant but I’m usually okay due to a couple things I’ve worked out from previous experience, such as not sitting near the windows. Seeing clouds below me along with traces of ice outside reminds me of my situation-crammed into a big pressurised metal tube with wings and engines so high and fast that if anything goes wrong we’re toast. Probably quite literally given the tendency of aircrafts to burn once they crash. And the reminder ramps up the anxiety lurking in the background. Granted during my first ever flight at thirteen years old I was experiencing bouts of vertigo anyway, but looking out the window finished the job and I ended up making good use of a sick bag. The other trick is to get a seat where I can observe the cabin crew for most of the flight. Again from my first flight I got spooked during landing when the reversers deployed. But somehow I remembered to look at the flight attendants in their seats and my fellow passengers and when I saw everyone completely unphased and almost bored I concluded that whatever this ungodly noise was, it was normal. It took me a little bit longer to come to the obvious conclusion. But the theory is still sound. Pay attention to the flight attendants if you can. They’re not professional actors so it’s probably not a stretch to think that if there is a real problem even if they try to hide it so as not to panic all these people crammed aboard a pressurised metal tube with wings, they’re still going to give off little tells of fear or stress that being in a life threatening situation inevitably leads to. Other passengers? Not so reliable. But for when the day comes that I have to fly again, because at least there are a few places I’d really like to visit someday I have a new plan. A foolproof plan if I can get my GP to agree. Medication. There’s got to be something out there that can silence my inner aircraft warning for good, and maybe even achieve that mythical “pleasant ride” mentioned just after the three minute mark in this video. 😁
@@mikoto7693 the "if anything goes wrong we're toast" actually is far from true. If anything, watching this channel has taught me how much really must go wrong for anything bad to happen. It's usually at least 4 or 5 failures all at once to cause anything really bad.
There is historic color footage from the ‘50s of the chief pilot of Boeing rolling a B707 over Seattle. If you don’t pull Gs then apparently this maneuver can be safely done. Edit: I believe the footage is also on UA-cam.
@@ranchrods1 I’m sorry but I don’t know his name. Apparently the chief pilot called him into the office and told him rather drily not to do it ‘anymore.’ 😉
In Germany Werner Baake did the same twice with the Boeing 720 D-ABOP near Ansbach. But he did it on the second atempt wrong, overloaded the airframe and the plane disintegrated midair, killing everybody onboard... "Ladys and gentlemen, if you look out the window you can see that the ground is above and the sky beneath you. Enjoy that flight..."
@@Lucien86 Not really, yeah might be unpleasant in the passenger seat, but the aircraft will be just fine. The safety factor is more than 1. The B707 test pilot even did a barrel roll with it. B747 was tested at mach .99, but never ever goes that fast normally.
@@janosmucha4897 I'm sure you're right. But in a structure that big physics is always against it and rolling puts some very abnormal loads on the airframe & wings. Heavily laden, full of fuel, and maybe 10 + years old, not quite so confident.
And after recovering from the roll, you grab the microphone and say "This is the captain speaking. We just did the sickest barrel roll with an airplane that weren't designed for it. Some people says it can't be done, but here we are! Drinks on us!"
Alaska Airlines flight 261! That accident has always stuck with me specifically because the plane flew upside down for an extended period of time. Would love to see your take on that one.
I was here to comment that too! The Flight Channel simulation of that was one of the most depressing videos I’ve ever seen. RIP those brave pilots and the passengers.
Im pretty sure that a FedEx pilot successfully rolled a DC10 during a hostile take over of the cockpit by a fellow FedEx pilot. The pilot who was flying the aircraft made several acrobatic maneuvers including a full roll of the aircraft.
You just got me to look that up. It's quite an interesting story on Wikipedia. The perp got two consecutive life sentences. The crew he injured with his hammer were still not medically certified to fly ten years after.
I don't think he quite managed a full inversion but he did get it to about 140 degrees. I think first he put it into a crazy steep climb to try and throw the hijacker backwards out the cockpit door.
Cabin crew: Both Pilots are dead, is one of the passengers a pilot? No, but I watched a lot Mentour Pilot on UA-cam. Cabin crew: Worth a try... Plane lands safely.
I won’t say which carrier, but when I left Malpensa Airport, I had come to the conclusion that our Pilot must have been ex-Navy fighter pilot because our take off was near vertical, followed up by a very very sharp bank to the left. It was awesome!
I really enjoy this dog-watching channel. I notice it has some great aircraft pilot content too. Bonus! I would appreciate some form of on-screen annotation of the instruments sometimes as I am not hugely familiar with the layout and function. Great work regardless. Thanks.
Another example of a transport category aircraft that ended up performing a full roll manoeuvre was Fedex 705, an MD DC10-30 cargo aircraft unfortunately ended up with a recently terminated disgruntled employee in the jumpseat that attempted to hijack the aircraft. On several occasions while the other two flight crew (The DC-10 in question being an older aircraft that still had an FE position in the cockpit) were attempting to restrain the hijacker they lost the upper hand causing the remaining pilot flying the aircraft to invoke his air force training to make acrobatic manoeuvres intended to throw the hijacker off balance. Fortunately they were ultimately successful in restraining the threat and making a safe landing at Memphis but at great cost as all the flight crew were seriously injured to the point at least one of them was never able to return to work as their injuries made them medically unfit. So yeah while possible the sort of situations where doing something so drastic makes sense are situations you never want to be getting in the first place.
There's a replay flight-sim of that with cockpit audio and subtitles telling the story somewhere here on youtube, just watched it recently. I'm sure you saw the same vid. Scary shit, what a dick, almost taking 2 innocent guys with him for his selfish reasons. Super intense video.
kilmer009 I think it was 3. The cockpit had 3 pilots. Unfortunately, all three of them sustained injuries such that they will never be able to fly again.
I love how you have your dogs in all your videos!!! I don’t know if this has anything to do with the pilots or not, but every time I fly I either get a nice smooth turn or a steep bank angel feeling like we’re gonna roll... wonder if that has to do with what ATC tells them to input?
18:50 Must be an interesting feeling when you have both the overspeed limit and the stall speed limit visible on the airspeed indicator at the same time, with only about 50 knots between them. How much altitude did you lose in that maneuver?
So, with that aircraft -weight, speed etc.- a safe roll recovery as shown will require about 5k feet to recover without over-stressing the aircraft. Performing a proper barrel-roll, and maintaining 1G, should not over stress the aircraft, but that would be an intentional manuever. It could be done, but the pilot would soon be looking for another job.
@@therealax6 I'd only glanced at the altimeter part way through :) Having wound back to the start of the roll yes, it was 14k :) It wasn't a very good roll, was it ! No need to lose that altitude - he let the nose drop.
@@millomweb Look at the speed (stall speed and over speed) indicators. This is probably as good a roll as this plane is capable of. As pointed out several times, the controlled barrel roll is a completely different manuever.
Thanks. That was awesome. I’m in the Airbus now so unless we’re in the sim with alternate law it won’t over bank. But we tried this in the MD80 sim. What’s important is that you start with about 300 kts. Pitch to about 25° up. Zero the elevator Then roll with full ailerons. As the pitch falls below the horizon inverted you won’t be that low when it comes back around. If you start it level then the pitch gets about 20° low and the recovery is nearly impossible because you just can’t pull out without the stick shaker. We were losing 10,000’ until we tried that technique.
I was hoping to see the 1-G barrel roll as mentioned about the 707 over Seattle. Back in college, I talked to a couple Boeing engineers who told the story of looping a 747. :)
Seemed like with this airframe the aerodynamics weren't there to pull that off? Right after he passed 60deg bank it started more of a dive then recovery vs a roll.
@@rodnabors7364 Once you get past 90 degrees, you need to push to low but still positive gee. This will reduce the downward acceleration a lot. Airliners have excellent L/D and adequate roll rate to do an aileron roll, but most airline pilots don't have much experience with doing aileron rolls. Rick Searfoss, XCOR's NASA surplus astronaut as I called him, could do an aileron roll in a rocket-powered plane without unporting the propellant feed lines. I know this because I was sitting next to him when he did it :) We got real light in the seats as we went over the top.
Those Boeing engineers were joking, right? Tex Johnson could get away with rolling a 707 back in the day, but I doubt anyone else would ever have the clout to get away with risking a 747 in the same way. That said, it would be absolutely spectacular to see something like that if anyone ever had the guts to do it.
Boeing really did it. Full cockpit crew and multiple engineers on board. Took the 747 to its max altitude, pointed it straight down, firewalled the engines. When the pilots thought they had enough speed, they pulled back on the yoke as hard as they could. In the process of successfully completing the loop, they did bend the hell out of the wings. They did land the plane, noticeably worse for wear.
What happens to the fuel in the tanks when you bank? How does it make sure that the engines continue to receive fuel? How is the fuel measured during a bank? What about during climb and decent?
Pretty sure there are multiple fuel pickups in different parts of each tank for that exact reason, and probably pressure dependant valves so when one pickup is sucking air, a valve closes so air doesn't get into the fuel pumps
That was so much fun! I adore that simulator! I really appreciate that you took the time to do this for us! I had wondered. Thanks for putting in the time and effort to make this!
Great vid. We we're just having an argument at work as to whether or not a commercial airliner could roll. I said there was no way but now I stand corrected.
I love how you explain complicated "airplane terms" in ways us lay people can understand. Plus you have a great voice, I could listen to you teach anything!
Can you do a video on 2012 flight movie with Denzel Washington? On what is possible with the flight and what is not, also to see how accurate the movie is with your opinions.
@I am not a bot I’m a real boy - That incident results in a posthumous award for both pilots. They kept their cool. It's so unfair they did everything they could do and still perished.
Tex's boss asked him what he was doing after rolling the 707 prototype "selling airplanes!" He was famous for barrel role maneuvers in all kinds of aircraft, including pouring drinks while doing it.
I'm extremely impressed at 18:50 where the maximum structure load/speed and stall speed got too close. Even for a split second you managed to get in between of that, hold it for as long as possible, and prevented a major damage to the aircraft. It's a sim but still, lightning fast reflexes sir bravo! Takes a toll on you physically and mentally to be even able to do it in a sim that precisely.
Thank you for clarifyling this. I was thinking that why the hell the red bars were appearing at higher speed, which of course in case of a stall, would appear at a lower speed.
Sir, I am watching your video one by one to know how the aeroplane works. I am not worried nowadays for the turbulence or anything happen when I travel by flight. Thank you for all the videos. Keep uploading more videos.
This reminds me of the approach when flying into the base at Guantanamo Bay. Every time, we would hit 50-60 degree angle and be so close to the water that I could swear we were getting spray flying up from the wingtip turbulence.
At 15:51, that line "just a little bit of back-pressure needed, very little" reminded me so much of Boss Ross. I almost expected to hear "just three hairs and some air".
When I did a roll in flight sim 2020 in a Cessna 152 I lost quite a bit of altitude even doing it quickly. I can see why larger planes don't even do it at airshows.
Cessna 152 is definitely not designed for acrobatics like that. you need a low winged aircraft with relatively symmetrical airfoils I believe. Think WW2 fighters. A high wing aircraft like a Cessna 152 has its center of mass below the wing, so it will naturally tend to stay in level flight (hang below the wing). Low wing aircraft like a P51 Mustang give up stability for maneuverability in flight and are thus more able to do things like rolls.
Great video. One of the complications of flying at 90 degrees or upside-down is that the control surfaces take on different roles. At 90 degrees for example, you would have to use the rudder to pitch the nose up to maintain altitude? And upside-down the elevators would have to be operated in the opposite way to normal flight? And the transitions would be very tricky. Like trying to fly a brick I would imagine. The late [Sir] Douglas Bader, the RAF fighter ace of WW2, did a barrel role in an ancient aircraft very close to the ground. He crashed badly and lost both his legs [in 1931 I think], but went on to fly combat missions in WW2 until he was shot down in 1941. There are bold pilots, and old pilots, but no old, bold pilots, as the saying goes. I think his engine lost power as well, because it had a gravity-feed carburettor feeding the pistons. But one can understand the appeal of doing something like that, even if it is not terribly safe.
Thanks Peter for all the details you provide into an elite group of people. I have a question for you concerning the topic in the video. During a such step bank or roll, would the fuel pumps still supply fuel to the engines or is there a risk of fuel starvation? Many thanks for taking the time to making such an excellent channel.
Sitting on the side, suddenly dangling from my seat belt looking straight out the window on the other side at the ground. Much more than 30 degrees, trust me. C-17 combat roll taking off from Bagram. Those guys have waaaay too much fun coming up with combat rolls, did mean we weren't a predictable target so it was worth it.
I remember watching a video about the 707 when it was first displayed to the public as a new air liner and the test pilot rolled the big airliner as he flew over the crowd of observers. Obviously that was quit the show. I recall the stunt was not planned and he was reprimanded but got away with it because the test plain was not damaged and it was a hell of a sales pitch for the new bowing air liner. ;)
In Germany Werner Baake did the same with the D-ABOP, but he overloaded the plane and crashed, killing everybody onboard... So: don't try this at home!
I disagree, I was on a flight over the caribean in a dreamliner, during storm season when we hit extreme clear air turbulence. The plane stalled, the pilot lost control and we tipped forward and to the side as if we were about to do a cartwheel somersault combo. the drinks trolley went into mid-air in slow motion and the pilot tried a few things but ended up rolling to escape the situation and bring things back control from what seemed like a spiralling nose dive. The drinks trolley ended up above the headrests slamming into the cabin wall nearly killing someone. I've been flying 2-3 intl. return trips a week for over a decade and never saw anything like it - I knew it was bad because the cabin crew were grabbing onto the chair legs screaming and crying for their lives. It took me 3 years before I was fully comfortable flying again and still get jumpy with bad turbulence.
This is what I am always fearing - turning while flying in turbulent conditions or hitting unexpected turbulence. Isn't it likely that the turbulences cause the plane to tilt over when it is already in say a 30 degree bank? @mentourpilot
If you anchor the tree, it should be fine. We used to have cats in my family and we'd use some nails and fishing wire to stop the tree from falling. They'll still play with ornaments and try to climb, but it should keep the tree up.
Steep turns! Am just getting used to them after watching more aviation videos and understanding some of the dynamics of flight and this particular video has explained the subject best. Steep turns can really get to a nervous flyer especially right after take off, you get an unexpected bank to either side! Oh the marvels of modern day aviation. As always, great video Petter!
The one to remember is load factor = 1/cos(beta), where beta is the bank angle. That's assuming you're looking to maintain level flight. A normal 30° turn results in about 1.155g. Dial that up to 60° and you're looking at 2g.
Back in the 90s, I was the photographer for FAA Director David Hinson and when the new version of the MD 80 aircraft came on the scene the factory pilot did a barrel roll over lake Michigan just east of Chicago a few days ahead of the Chicago air show. I was lucky enough to be on that flight and other than looking out the window, you would have no idea it was a barrel roll. And no, the plane didn’t make any crazy sounds in the passenger compartment. It felt like it was built for it. Was it? Thanks for the great videos!
Well the perceived gravity in a turn is actually a pleasant side effect of making the most efficient turn in an aircraft... But yeah that maybe more difficult to explain...
One of the dogs always is! It's usually the brown one. I think it is a simulator dog as it never moves more than 3 feet from any given position on the sofa and never moves off the sofa at all. The white dog is more of an "Easter Egg" buried deep in the simulator code.
Many thanks MP for your great instructional ability to transfer normal and technical aviation information in all of your work/ videos. From my perspective...you are simply the "best" - keep up the good works.
@@fritsfelix8423 Hell could have been worse than that one thing is for sure gravity will not care what is in the way when it eventually brought the uncontrolled plane back to Earth.
He wasn't a pilot, he had a hammer, and he was aboutta be sacked and knew it. Tried making it a 'workplace death' so his ex and kids would benefit from that sweet sweet payout. The pilot who managed to roll the plane did so because half his body was paralyzed from the attack; it was all he could feasibly do to try and save his two buddies from the rood boi.
Coming into Burbank in a 727 in the early 1980s, the pilot announced that the radar was out at Burbank, so no ifr. Ceiling was 3,000 ft with broken clouds below. We didn't want to go to the wrong airport, did we? So he said we would be doing maneuvers we do not usually do because vfr you can't fly into cloud, but don't worry, completely safe. We flew across San Fernando Valley at low altitude making turns with seemed like 90 degree bank. I was looking out the window straight down, and it was close. Cabin was silent with gasps as we got to the apex of the turns. Applause after landing. I think the pilots enjoy it.
Great video, and a very clear explanation. Could you do a video about why the pilots of Alaska Airlines Flight 261 attempted to fly the plane inverted? Obviously not an ideal way to go, but curious why they thought it might help the situation.
The control surfaces were jammed due to mechanical failure, resulting in the plane inverting without the pilot input. They attempted to hold it simply to buy time, with no means of returning the aircraft upright.
This is very interesting , Me and some coworkers were just talking about this a lunch to day and your channel. None of have any flying experience, but we both watch your channel.
@@MentourPilot ... +1. Pretty impressive how you keep the altitude in control at 60 degrees and with the stickshaker active about as well as in straight and level flight.
Some trivia: On August 6th, 1955, Pilot Alvin "Tex" Johnston performed not one, but _two_ barrel rolls of the Boeing 367-80 prototype. This single prototype was the basis for both the Boeing 707, and the KC-135 fuel tanker (on which, I was a jet engine mechanic). The rolls were maintained at about 1 G all the way through. There were press aboard during the time, and this perfect 1 G roll kept them confortable enough to snap a few pictures out the windows during the rolls. There's a really eerie photo of the wing hanging upside down relative to the geound. Theres also some grainy video from thw ground of it doing these rolls on youtube. These barrel rolls were unsanctioned. It was simply supposed to be a flyover of an air race. When chewed out by his boss at Boeing, Tex claimed he was simply selling planes. In fact, this may have actually been the case. Among the many aviation industry representatives sent to the air races, a few were USAF. Seeing such a big airliner perform what was ostensibly a combat maneuver, may have cemented their earlier decision to pick the KC-135 tanker over the as yet unbuilt DC-8 tanker. Even more trivia for you, Tex Johnston (and his mannerisms) was the inspiration for "Major Kong", the comically and unstoppably heroic B-52 pilot in Dr. Strangelove (If you haven't seen the movie, maybe you'll recognize the meme of a cowboy riding a nuke. That guy is based on Tex Johnston). It wouldnt be the only time a KC-135 was rolled, or otherwise thrown into extreme maneuvers... Though it may be the only time a roll was done intentionally. There are a few incidents where KC-135s lost a pair of engines on one side, throwing the plane out of control. I can also think of an incident I heard about where a KC-135 broke the sound barrier in a dive to escape migs. _______ As a jet engine mechanic on KC-135s, I had to get an engine run certification for it. An easy way to practice engine failure procedures, the base had a full motion KC-135 flight simulator the instructor scheduled an hour on. Naturally, we plowed through our engine run stuff to finish off the hour playing with the flight simulator. Bare in mind, I'm a jet engine mechanic, not a pilot. But, I did grow up playing the crap out of home flight sims. The go-to thing these classes would try is a barrel roll. Usually ended in failure. In fact, the previous class briefly broke the flight sim, as they some how managed to go past the limits of the hydraulics while attempting the roll. So we left motion off while messing around with it to avoid breaking it again. First time I tried it, spent too long in the roll, and it dove inverted and oversped within seconds. Second time though, I throttled up to max, dove a little bit, pulled up and to the right, then I cranked the yoke over 90 degrees left while holding some back pressure, and kinda shocked the other guys on the flight deck after pulling all the way through and levelling off. I'm sure it was sloppy. Definitely no Tex Johnston roll. I was just happy I kept it consistent at a little under 2.3 Gs all the way through (which my GAC friend in the copilot seat informed me is the limit for an Over G inspection, so I guess I came really close to "breaking the jet"). Anyway, that was one of the most memorable experiences of my life.
PS, for reference, although the Boeing 707/KC-135 is a 4 engine aircraft, they were build when jet engines were in their infancy, and had poor performance compares to modern high bypass jet engines. As a result, theyre actually quite small. They're about the same size as 737s. I'd estimate KC-135s are a little bit longer, but a little bit skinnier. Whenever we parked a KC-135 on wash rack, sometimes Navy P-8 Poseidons would be scheduled at the same time as well, and park in really close in the opposite direction so the wings dont hit each other. It was a good way to compare aircraft sizes. The P-8 is essentially a Boeing 737 that has been converted into an antisubmarine warfare aircraft... It's actually a pretty nutty plane in its own right, basically a 737 bomber. It has a bomb bay in the back, just behind the wing roots, which can drop depth charges and sonobouys. And I remember they had external hardpoints on the wings, for torpedoes, and I think one of their crew even told me it can carry anti-ship harpoon missiles.
"Don't try this at home." Dude, if I had a $6M simulator at home, I'd do whatever the heck I want with it, and finding out whether they programmed it to accurately simulate a tailslide into a falling leaf is high on the list.
Back in the early 80s at the Dayton Air Show my sister and I got to go up in an open cockpit stunt biplane. The minute that pilot saw 2 young women back there he gave us a devilish smile and the ride of our live! He took us up and did rolls, barrel rolls and everything he could think of. We screamed the whole time but I have to admit, it was one of the most exciting experiences of my life!
Man amazing video. Your explanation of the physics is spot-on! Keep up the good work. You have helped me a lot overcome my fear of flying by understanding more about what it actually looks like flying from within the cockpit. If you manage to correlate your scenarios more (maybe with visual aids) with what the passengers are more likely to experience from their point of view would be ideal.
I love how he talks to me like I’m ever gonna do this.
Yeah :D
"If this ever happens to you... do this and that" haha
i guess he's doing this for future airline pilots...
If there is a 100.000:1 Chance for every viewer to ever sit in a cockpit, then there are at least 7 people who watched the video that should remember...
To be fair, it's not like I haven't tried to do this in a flight simulator.
Last flight before retirement :p
I've started saying 'pull up, terrain' as im driving up a hill in my car.
you're technically right
haha underrated comment
Ha! 🤣
I say bank angle when I’m going around a tight bend!
@@robsmithracing lmao I do that too
As a local note, not only did Tex do that famous barrel roll over Lake Washingon, but 60 years later a misguided airline (non pilot ground type) employee 'borrowed' a Horizon/Alaska prop jet and did loop-de-loops over Puget Sound until he ran out of fuel and crashed on an island.
Rip sky king
Fly high sky king
Some heroes don't wear capes.
None of these popular aircraft channels have went over that flight.
Maybe it was only a big story because I live in Seattle, but I'd like to see a breakdown of that flight. I mean it looked like he skimmed the water just about coming out of his maneuvers.
I get they probably don't want to give attention to such a stunt, but that flight still fascinates me all these years later.
@@PowerScissor It's been a while, but I have watched YT video that did a breakdown on the Horizon/Alaska flight.
Gotta be honest, when you're in the back looking out the window, 30 degrees seems a lot steeper.
That doesn't seem very steep for me
@@spacemapper1127 congrats bro
Draw a circle, draw a 30 degree bank angle in it, hold it up and see if it matches what you're experiencing.
I agree. When all you can see through your window is ground or sky, you have no good basis for comparison, as you don't have a horizon to compare to. They hog all the horizon up in the cockpit.
why does being in the back matter in a roll?
i love how the flight computers are completely silent during the rollover. "you're on your own now, cowboy!"
They like " don't do it"
Dang, I swear I kept hearing from the Airliner's flight deck, "annnt- must roll- annnt- must roll- annnt- must roll...
That because the flight computer ejected just after it said "you're on your own now, cowboy!"
So when they download the Flight Data it will have deniability. 🙄
The man has four stripes. If he can make a video on it, that means he can as he pleases
"This is your captain speaking, please return your traytables to the upright position, fasten your seatbelt, and someone hold my beer"
yaa thats my flight in xplane when demo mode ends.
A proper 1G roll would be barely noticeable. Might be a bit shaky, but everything stays roughly where it is.
@@HappyBeezerStudios Actually if you think about it, a "proper" 1G roll technically varies up to as much as 2G on the airplane itself. In order for you to feel 1G through the floor of the airplane while fully inverted you'd need to be doing 2G to counteract the force of gravity. Sure you can make it "feel" like gravity spins with you but the plane has to tolerate twice that. A true 1G roll in terms of the aircraft would have you feeling weightless when you're inverted.
@@HappyBeezerStudios I disagree. If anyone had their windows open, seeing the horizon corkscrew around, invert, and hopefully un-invert all in the absence of horizontal force would be terrifying. If you were more slowly rolled, the feeling of dangling by your seatbelt would at least feel like the plane was being supported on its current heading.
It would be nauseating as your inner ear would be telling you (quite rightly) that you were accelerating at insane speeds in an uncontrolled way directly at the ground, coupled with presumably freaky shuddering and groaning as all manner of structural and aerodynamic chaos was happening to the airframe around you.
I'm thinking people would be passing out and vomiting immediately.
I thought of something like the inverted 707
Even though this was performed in a simulator, the good captain shows an extraordinary amount of skill and airmanship.
When you expect a click bait, but instead you receive detailed information about the topic.
What dimension is this?
You must be new to mentour pilot
@@SomeNot Nah. It was rhetorical
Just look for the huge white rabbit, Dorothy; he will escort you back thru the Looking Glass...
*
Aaaah... reminds me of the old days of the internet.
the dimension where UA-cam is a normal place. actually sometimes happens in our dimension as well
The dog is the real star here. He's so cool about it all. I don't think a 90 degree bank angle would faze him!
There is no truth in the rumour that Mentour Pilot gets his hair transplants from the dog!
You must have given dog some cat nip. Its the liveliest I've seen him.
hes permanently banked on the couch
How does a commercial airline pilot have a dog? Aren't you away from home most of the year? Who takes care of it daily?
@@anathardayaldar Look at the pictures in the background, I'll let you figure out the rest :)
Thank You for the very instructive video Captain! There was also another incident in Brazil (Brasilia) on Sept 29 1988, when a VASP 737 was hijacked. The Captain not only rolled the aircraft into a barrell roll, but also went into a vertical spin before the assailant was destabilized. Subsequently, he recovered the aircraft and landed safely without the help of the Co-Pilot, who unfortunately was killed by the assailant. The Commander, Fernando Murilo is considered a Brazilian National Hero.
Captain Murilo unfortunately passed away August 26, 2020
Wow!! 😯
Would love a final report on that by mentor pilot.
We need a movie on THIS!!! This sounds wild!
You only lost about 1000ft :-) Wow!
Oh, don't try this at home? I just wanted to go in my backyard, start my second-hand A380, climb to 10.000 feet and roll it. Disappointing...
I've got the Antonov 225 in my yard. My A380-800 is on back order.
I’ll lend you mine A380 but I doubt it’ll fit in your home.
Is this Emirates, Qatar and Ethiad meetings on whose buying whose 380's
@@v2snake
Lufthansa wants to get in on this conversation
You should get the C5 galaxy. I tried it with a 100Ton load had to reorganize the apache helicopter and the M1 i was carrying. Sort of a messy job. Also a crew member accidentally dropped a grenade while holding it by the pin when we rolled over. It wasn't a good day at the backyard.
*I would fly a lot more if they did barrel rolls*
Whatever
I would pay the pilot to do some air show rolls.
Lol, more like you'll fly one more time...
You'd eventually probably spill your soda, unless the pilot maintains inertia for gravity.
@@kaneo1 And that is exactly what that bloody experienced and talented Boeing 707 test pilot did. Textbook roll. Load factor one, and perfectly coordinated. How many pilots are cleared to do that in an airliner? One? Two?
Tonight I was flying with Ryanair and after landing I asked the flight attendant if I could visit the cockpit, just like you recommended in one of your videos! So the pilots agreed and we had a nice little chat! I forgot to take a picture but they switched on the cockpit lights for me for some Christmas mood!
Excellent! That’s the way to do it! Good stuff.
@@MentourPilot many many thanks to you for sharing this lifehack!
You landed and didn’t die??
@@MentourPilot will it work for every company? :)
Really? I'm gonna take three flights with Ryanair this january, i'll give it a shot! :D
Can you point me to the vid btw please?
Boeing test pilot “Tex” Johnson Barrel rolled the Boeing Dash 80 in 1955 over Seattle. He held positive G the whole time. Boeing’s Boss at the time told him not to do it again. He was a top pilot so could pull it off.
Yes he said & remember he was chief test pilot at that time, that it was a 1g from memory.
"What are you doing?"
"Selling planes."
"Okay....let's never do that again, tho, okay??"
It's not well known but rolling the 707 was practiced, I think the day before, on a test flight over the Olympic Peninsula. It wasn't a hazardous impulsive act. Johnson had already done it as testing the flight characteristics of the plane. He knew before showing off over Sea Fair that it was a safe maneuver for the plane. I would love to have been there but was only 7 yo and living in NC at the heyday of Sea Fair and the hydroplane boat races.
I think the issue was that Boeing didn’t want to freak out the public who would be flying in the plane when it entered service. Most modern commercial jets should be able to perform a barrel roll in level flight without any problems. I believe the Alaska Air plane (an MD 80, Flt 261) that crashed off of California attempted, and may have succeeded for time, to fly inverted.
Johnston....Johnston...
Seeing Mr. Hörnfeldt get serious and focused instantaneously at 18:27 then yank something with such force in the middle console to roll it out to level somehow made me proud. I don't know why, he is not my kid or anything but that swift taking of control made me say "that's my boy!"... Interesting.
Long ago when I was a little kid (like 5 years old) I got to visit the cockpit during flight, I was asking the pilot about all the buttons on the panel, he was very patient with me but looking back on it now I'm not so sure about the button that he said turned the plane upside down :D Thanks for giving me a great memory, anon pilot. Merry xmas all!!
😂
I'm glad you mentioned Tex Johnston's airleron roll in 1955, on Boeing's 367-80 prototype jetliner, which would eventually become the first generation Boeing 707. From what I read about it, after he landed, I believe the CEO or President of Boeing at the time asked him (not the exact words) "What did you think you were doing up there?" And Tex's response was "I was selling an airplane". :-)
Best answer of all time.
@Michael The American Patriot : No, Tex Johnston didn't do an aileron roll, he did a barrel roll. It is very different. A barrel roll is a +1G maneuver, an aileron roll is a +1/-1G maneuver (at least).
@@PeterPan-iz1kk I stand corrected, bottom line is, the ailerons are used in both maneuvers.
In 1990, while on deployment in the Persian Gulf, I witnessed an RAF Nimrod do a 360 degree barrel roll flying at low altitude! It was the coolest thing I had seen up to that point aviation-wise! Got to share this story with an old RAF Crew Chief in Thailand this year. He worked on the Nimrod and totally confirmed that not only was it possible, he actually was in one that did it himself!
Nimrod is hardly an airliner
@@testboga5991 It is the size of one.
@@testboga5991The airframe of the Nimrod is based on an airliner, the first jet airliner in fact. Nimrod is a heavily modified version of the De Havilland Comet in fact.
Thank you for your service!
They also stuffed one into Toronto harbour when they tried it at too slow an airspeed.
Skillshare is missing a class on rolling 737s... ;)
Should we add one?
@@MentourPilot i suppose so
You are an excellent communicator. You use the minimum amount of language and are very precise and descriptive with everything you say. You explain terms without over describing or going off on tangents. The only flaw I have ever noticed with your excellent communication (and I haven't checked to ensure I am correct in this), is that in this video I don't remember you giving a quick explanation of what trimming was. Usually when you introduce a term you give a quick explanation.
Question: Do Pilots think in terms of the controls they use without thinking what flaps or ailerons they are using or what these are doing? Could someone learn how to fly a plane without understanding how the flaps etc. work? I know how to steer a car but don't know what processes are involved in making steering happen. I presume when something goes wrong, that is when it is useful to have an understanding of what is involved.
Excellent educational videos with excellent communication.
Thank you for your excellent feedback, the answer is, yes. I could teach you to fly without explaining the theory behind. The problem would come when you need to do something I haven’t shown you, that’s where knowledge is important,
He is a military pilot as well, and they learn it wery good!
Piers Trindal I’m an amateur pilot and I never think about what the ailerons or rudders are doing. However, when wing tipping (because the instructor wants you to), you gotta push the rudder in the direction you’re tipping,which intuitively would make you think you’re steering yourself into the ground!
@@MentourPilot You're brilliant. Not just any pilot will come and explain all these things about being a pilot and enjoy it too, but I think you might be wrong about one thing. There was once not too long ago a tv program series which tells the true stories of plain crashes, the pilots who flew them, from take off till point of failure, what the cause was and when contact was lost and who were on board. They get the info on the black boxes and the controller(s) who had contact with them. They actors play the rolls of what happened and the true evidence get shown on video clips and photos as well as pictures of the real pilots who died. Two pilots who flew an A320 had to come in for landing but the
ground below had a lot high rocky mountains and the airport was on the other side. They were already too low and had to work their way through the mountains and thus had make a lot of sudden fast steep turns to avoid crash into
the mountains. Both pilots fought for all the lives on board when the pilots saw an opening in the mountain which the turn that to make to the left caused the plane role over a complete 90 degrees. They had to get the plane upright immediately so completed the role as soon as they could and made it through the mountains to the runway. It was only because they were lower than they should have been. They were supposed to come over the mountains.
@@Pantbera, the actors play the 'roles', not 'rolls'. The plane 'rolls', it does not 'role'. But I give it to you that you were perfectly logical in that inversion.
I was fortunate enough to know Tex Johnson and flew with him when our company was flight testing VG's for the PA31-350 back in 1993, he was a true gentleman.
My first time flying was last week and I was so terrified and watching this guy made me feel so much better about flying
Nichales Price kk
@@ha6590 kkk
HAve you continued flying? It is very safe, fast and can be a fun experience!
Well, you’re not alone my friend. While flying doesn’t actually terrify me, it does make me nervous and anxious. You guys know that cockpit voice warning that says “terrain ahead, terrain ahead, pull up, pull up,” yes? Well some of my instincts are convinced flying is both dangerous and unnatural despite the evidence otherwise. So when I approach and aircraft I intend to board and ride on I have the biological version of “aircraft ahead, aircraft ahead, turn back, turn back.” 😄 The difference is that I can override its objections, board, sit, belt up and stay quiet for the entire flight. It is unpleasant though as I’m so on edge with white knuckle syndrome, I’m probably going to leave finger shaped grooves in the seats somewhere. 😉
The most dramatic banking of a plane I was a passenger on was when flying out of Shenzhen. It was incredible watching the wing dip down towards the white waves and the harbour below.
Every commercial flight in good weather should come with a nice 70° bank at some point. Bring back the fun in flying commercial.
Protip from the WWII combat pilots: when you get past 60 or 70 degrees, you have to use the rudder to maintain altitude. Once you're at 90 degrees, the rudder is effectively your aileron.
Can't imagine that being good for the structural integrity of the rudder at that size of plane.
I wondered about this too, he doesn't mention top rudder input during the high bank maneuver to keep the nose up. An Airbus lost a vertical stab and rudder and crashed due to overly aggressive rudder input by the co-pilot, so maybe there is a structural risk to the tail in aircraft of a certain size when using the rudder/v stab this way.
At the size of the 737, rudder wouldn’t provide anywhere near enough lift.
Speaking of ww2 fighters…. I had the immense pleasure of flying in a AT-6 trainer fighter…and amongst other things, I did the peel off you see in movies when there’s a squadron of planes needing to dive bomb (forget actual term)…. And it stays 1g all the time… ie youd never know your on such a steep angle
Seems your doggie displayed two comfortable “bank angles” during the video. 😉
Speaking as someone who has flown and experienced “white knuckle syndrome” nearly every time, it’s great to have the opportunity to know what’s really going on in the cockpit. Learning more about both the aerodynamics (the physical forces acting on the aircraft) and the airplane controls (what the pilot is doing with the aircraft) helps to mentally combine the two to better understand what’s actually happening when we fly. Thanks for the flying lesson! ✈️🌐😁
Jeffrey Powell well said, I watch Mentor because it eases my flying fear. I have no intention of getting my PPL
Just for completion, most airbus aircrafts and the larger aircrafts, like the Boeing 747 do not have a cable connection to the ailerons (they have for the THS (trimmable horizontal stabilizer) though.
Instead they are controlled by electric signals and have one or more additional hydraulic systems that will work/start operating if the engines would fail.
Jeffrey, I’m glad watching these videos ease your “white knuckle syndrome” when flying. I probably have a pretty good idea of how you felt. I seem to have some instinct deep inside that doesn’t like flying. It’s like… ah you’ve heard the “terrain ahead, terrain ahead, pull up, pull up” warning in these videos? Well, when I’m approaching an airplane I actually intend to ride on, I’m pretty much experiencing. “Aircraft ahead, aircraft ahead, turn back, turn back.”
I suppose it’s not all bad, because I can override it and make myself board, sit, put the seatbelt on and stay quiet for the entire flight. It’s not pleasant but I’m usually okay due to a couple things I’ve worked out from previous experience, such as not sitting near the windows. Seeing clouds below me along with traces of ice outside reminds me of my situation-crammed into a big pressurised metal tube with wings and engines so high and fast that if anything goes wrong we’re toast. Probably quite literally given the tendency of aircrafts to burn once they crash. And the reminder ramps up the anxiety lurking in the background. Granted during my first ever flight at thirteen years old I was experiencing bouts of vertigo anyway, but looking out the window finished the job and I ended up making good use of a sick bag.
The other trick is to get a seat where I can observe the cabin crew for most of the flight. Again from my first flight I got spooked during landing when the reversers deployed. But somehow I remembered to look at the flight attendants in their seats and my fellow passengers and when I saw everyone completely unphased and almost bored I concluded that whatever this ungodly noise was, it was normal. It took me a little bit longer to come to the obvious conclusion.
But the theory is still sound. Pay attention to the flight attendants if you can. They’re not professional actors so it’s probably not a stretch to think that if there is a real problem even if they try to hide it so as not to panic all these people crammed aboard a pressurised metal tube with wings, they’re still going to give off little tells of fear or stress that being in a life threatening situation inevitably leads to. Other passengers? Not so reliable.
But for when the day comes that I have to fly again, because at least there are a few places I’d really like to visit someday I have a new plan. A foolproof plan if I can get my GP to agree. Medication. There’s got to be something out there that can silence my inner aircraft warning for good, and maybe even achieve that mythical “pleasant ride” mentioned just after the three minute mark in this video. 😁
@@mikoto7693 the "if anything goes wrong we're toast" actually is far from true. If anything, watching this channel has taught me how much really must go wrong for anything bad to happen. It's usually at least 4 or 5 failures all at once to cause anything really bad.
There is historic color footage from the ‘50s of the chief pilot of Boeing rolling a B707 over Seattle. If you don’t pull Gs then apparently this maneuver can be safely done.
Edit: I believe the footage is also on UA-cam.
The answer I came for. Thanks for saving me 25 mins.
that was Tex Johnson
@@ranchrods1
I’m sorry but I don’t know his name. Apparently the chief pilot called him into the office and told him rather drily not to do it ‘anymore.’ 😉
In Germany Werner Baake did the same twice with the Boeing 720 D-ABOP near Ansbach. But he did it on the second atempt wrong, overloaded the airframe and the plane disintegrated midair, killing everybody onboard...
"Ladys and gentlemen, if you look out the window you can see that the ground is above and the sky beneath you. Enjoy that flight..."
Sky King did that too in Seattle with zero training.
Q. What happens if you roll an airliner?
A. You lose your job
That structural overload is a real thing. You get to survive to lose your job - if you're lucky.
@@Lucien86 Not really, yeah might be unpleasant in the passenger seat, but the aircraft will be just fine. The safety factor is more than 1.
The B707 test pilot even did a barrel roll with it. B747 was tested at mach .99, but never ever goes that fast normally.
@@janosmucha4897 I'm sure you're right. But in a structure that big physics is always against it and rolling puts some very abnormal loads on the airframe & wings. Heavily laden, full of fuel, and maybe 10 + years old, not quite so confident.
You Will have an appointment with the Wind Commander for sure.
World is boring.
And after recovering from the roll, you grab the microphone and say "This is the captain speaking. We just did the sickest barrel roll with an airplane that weren't designed for it. Some people says it can't be done, but here we are! Drinks on us!"
That was no barrel roll.
Haha, thats the only way to calm people down after such an incident :D
Hahahahaha!!!!!
I hate to be that guy and I’m sorry, but it’s called an Aileron roll..
"This is the captain speaking. Nothing to worry about, I just needed to put in my eyedrops."
Alaska Airlines flight 261! That accident has always stuck with me specifically because the plane flew upside down for an extended period of time. Would love to see your take on that one.
I was here to comment that too! The Flight Channel simulation of that was one of the most depressing videos I’ve ever seen. RIP those brave pilots and the passengers.
Im pretty sure that a FedEx pilot successfully rolled a DC10 during a hostile take over of the cockpit by a fellow FedEx pilot. The pilot who was flying the aircraft made several acrobatic maneuvers including a full roll of the aircraft.
You just got me to look that up. It's quite an interesting story on Wikipedia. The perp got two consecutive life sentences. The crew he injured with his hammer were still not medically certified to fly ten years after.
I was expecting that to be mentioned in the video.
I don't think he quite managed a full inversion but he did get it to about 140 degrees. I think first he put it into a crazy steep climb to try and throw the hijacker backwards out the cockpit door.
Can anyone link the Wikipedia article?
full video simulation
Cabin crew: Both Pilots are dead, is one of the passengers a pilot?
No, but I watched a lot Mentour Pilot on UA-cam.
Cabin crew: Worth a try...
Plane lands safely.
or "both of our pilots are dead, is anyone FSX:SE certified in here?"
@@ibis8566 that works.
ö. . , LOL!
This thought passed through my mind not even 2 minutes ago 😂😂
Capt Joe agrees
I won’t say which carrier, but when I left Malpensa Airport, I had come to the conclusion that our Pilot must have been ex-Navy fighter pilot because our take off was near vertical, followed up by a very very sharp bank to the left.
It was awesome!
“BANK ANGLE, BANK ANGLE”
“Yeah yeah, fookin computers telling me what to do…”
My stomach would not have been pleased 🤑
@@marcomontanarini1836 It's a hell of a ride on a Boeing 777, I'll tell ya!
I really enjoy this dog-watching channel. I notice it has some great aircraft pilot content too. Bonus! I would appreciate some form of on-screen annotation of the instruments sometimes as I am not hugely familiar with the layout and function. Great work regardless. Thanks.
Another example of a transport category aircraft that ended up performing a full roll manoeuvre was Fedex 705, an MD DC10-30 cargo aircraft unfortunately ended up with a recently terminated disgruntled employee in the jumpseat that attempted to hijack the aircraft. On several occasions while the other two flight crew (The DC-10 in question being an older aircraft that still had an FE position in the cockpit) were attempting to restrain the hijacker they lost the upper hand causing the remaining pilot flying the aircraft to invoke his air force training to make acrobatic manoeuvres intended to throw the hijacker off balance. Fortunately they were ultimately successful in restraining the threat and making a safe landing at Memphis but at great cost as all the flight crew were seriously injured to the point at least one of them was never able to return to work as their injuries made them medically unfit.
So yeah while possible the sort of situations where doing something so drastic makes sense are situations you never want to be getting in the first place.
There's a replay flight-sim of that with cockpit audio and subtitles telling the story somewhere here on youtube, just watched it recently. I'm sure you saw the same vid. Scary shit, what a dick, almost taking 2 innocent guys with him for his selfish reasons. Super intense video.
kilmer009 I think it was 3. The cockpit had 3 pilots. Unfortunately, all three of them sustained injuries such that they will never be able to fly again.
@@XPlaneAviation - One man did continue flying IIRC.
@@bruzote Privately, in his own plane. He could never get his ATP back due to the injuries. There were 2 pilots and a flight engineer on board.
yo just punch them in the face instead of doing acribatics.why are these pilots so dumb?
I love how you have your dogs in all your videos!!!
I don’t know if this has anything to do with the pilots or not, but every time I fly I either get a nice smooth turn or a steep bank angel feeling like we’re gonna roll... wonder if that has to do with what ATC tells them to input?
18:50 Must be an interesting feeling when you have both the overspeed limit and the stall speed limit visible on the airspeed indicator at the same time, with only about 50 knots between them.
How much altitude did you lose in that maneuver?
@@dncrht I thought he was at 10k, not 14 !
So, with that aircraft -weight, speed etc.- a safe roll recovery as shown will require about 5k feet to recover without over-stressing the aircraft.
Performing a proper barrel-roll, and maintaining 1G, should not over stress the aircraft, but that would be an intentional manuever. It could be done, but the pilot would soon be looking for another job.
@@millomweb The roll started at 14,000. (Look at the altitude on the right hand side.)
@@therealax6 I'd only glanced at the altimeter part way through :) Having wound back to the start of the roll yes, it was 14k :)
It wasn't a very good roll, was it ! No need to lose that altitude - he let the nose drop.
@@millomweb Look at the speed (stall speed and over speed) indicators.
This is probably as good a roll as this plane is capable of.
As pointed out several times, the controlled barrel roll is a completely different manuever.
I'm a nervous flyer but your video is making me more confident next time I fly. Thank you
Thanks. That was awesome. I’m in the Airbus now so unless we’re in the sim with alternate law it won’t over bank. But we tried this in the MD80 sim. What’s important is that you start with about 300 kts. Pitch to about 25° up. Zero the elevator Then roll with full ailerons. As the pitch falls below the horizon inverted you won’t be that low when it comes back around. If you start it level then the pitch gets about 20° low and the recovery is nearly impossible because you just can’t pull out without the stick shaker. We were losing 10,000’ until we tried that technique.
Recovered from that roll like a boss. Expected him to say "everyone out of cockpit".
"What happens if you ROLL an airliner?!"
People are not happy.
They are never happy anyway :)
plenty of complaints will be coming up if you did that..might not fly again commercially after that
They’re gonna sue the pilot’s ass.
@@ItsJustMeMusic they will become Uber driver after that....
If you do it right then you maintain 1G and nobody would even notice unless they looked out of the window.
I was hoping to see the 1-G barrel roll as mentioned about the 707 over Seattle.
Back in college, I talked to a couple Boeing engineers who told the story of looping a 747. :)
yea that guy was a legend
Seemed like with this airframe the aerodynamics weren't there to pull that off? Right after he passed 60deg bank it started more of a dive then recovery vs a roll.
@@rodnabors7364 Once you get past 90 degrees, you need to push to low but still positive gee. This will reduce the downward acceleration a lot. Airliners have excellent L/D and adequate roll rate to do an aileron roll, but most airline pilots don't have much experience with doing aileron rolls.
Rick Searfoss, XCOR's NASA surplus astronaut as I called him, could do an aileron roll in a rocket-powered plane without unporting the propellant feed lines. I know this because I was sitting next to him when he did it :) We got real light in the seats as we went over the top.
Those Boeing engineers were joking, right?
Tex Johnson could get away with rolling a 707 back in the day, but I doubt anyone else would ever have the clout to get away with risking a 747 in the same way. That said, it would be absolutely spectacular to see something like that if anyone ever had the guts to do it.
Boeing really did it. Full cockpit crew and multiple engineers on board. Took the 747 to its max altitude, pointed it straight down, firewalled the engines. When the pilots thought they had enough speed, they pulled back on the yoke as hard as they could. In the process of successfully completing the loop, they did bend the hell out of the wings. They did land the plane, noticeably worse for wear.
Interesting to see the speaking stops during the roll, mental workload must have been pretty high.
What happens to the fuel in the tanks when you bank? How does it make sure that the engines continue to receive fuel? How is the fuel measured during a bank? What about during climb and decent?
Go to school for that
Pretty sure there are multiple fuel pickups in different parts of each tank for that exact reason, and probably pressure dependant valves so when one pickup is sucking air, a valve closes so air doesn't get into the fuel pumps
That was so much fun! I adore that simulator! I really appreciate that you took the time to do this for us! I had wondered. Thanks for putting in the time and effort to make this!
I don't mind steep bank angles; it's steep bank interest rates that worry me.
£... ;-)
Great vid. We we're just having an argument at work as to whether or not a commercial airliner could roll. I said there was no way but now I stand corrected.
I love how you explain complicated "airplane terms" in ways us lay people can understand. Plus you have a great voice, I could listen to you teach anything!
Can you do a video on 2012 flight movie with Denzel Washington? On what is possible with the flight and what is not, also to see how accurate the movie is with your opinions.
@I am not a bot I’m a real boy - That incident results in a posthumous award for both pilots. They kept their cool. It's so unfair they did everything they could do and still perished.
Skyking did a loop in a Q400 like a total G. RIP Richard Russell, you absolute chad.
wow, that was awesome to watch a roll of a commercial airliner, thank you for simulating the roll!
Tex's boss asked him what he was doing after rolling the 707 prototype "selling airplanes!" He was famous for barrel role maneuvers in all kinds of aircraft, including pouring drinks while doing it.
Admit it, after he says “alright?”, or “ok?”, you don’t get it but you still love it!
Not a clue what he's talking about half the time but I'm at least 20 episodes down.
I'm extremely impressed at 18:50 where the maximum structure load/speed and stall speed got too close. Even for a split second you managed to get in between of that, hold it for as long as possible, and prevented a major damage to the aircraft. It's a sim but still, lightning fast reflexes sir bravo! Takes a toll on you physically and mentally to be even able to do it in a sim that precisely.
Thank you for clarifyling this. I was thinking that why the hell the red bars were appearing at higher speed, which of course in case of a stall, would appear at a lower speed.
Sir, I am watching your video one by one to know how the aeroplane works. I am not worried nowadays for the turbulence or anything happen when I travel by flight. Thank you for all the videos. Keep uploading more videos.
This reminds me of the approach when flying into the base at Guantanamo Bay. Every time, we would hit 50-60 degree angle and be so close to the water that I could swear we were getting spray flying up from the wingtip turbulence.
At 15:51, that line "just a little bit of back-pressure needed, very little" reminded me so much of Boss Ross. I almost expected to hear "just three hairs and some air".
When I did a roll in flight sim 2020 in a Cessna 152 I lost quite a bit of altitude even doing it quickly. I can see why larger planes don't even do it at airshows.
Cessna 152 is definitely not designed for acrobatics like that. you need a low winged aircraft with relatively symmetrical airfoils I believe. Think WW2 fighters. A high wing aircraft like a Cessna 152 has its center of mass below the wing, so it will naturally tend to stay in level flight (hang below the wing). Low wing aircraft like a P51 Mustang give up stability for maneuverability in flight and are thus more able to do things like rolls.
"Tex" Johnson. No one could have picked a better name for such a character.
superdupergrover - Johnston
Great video. One of the complications of flying at 90 degrees or upside-down is that the control surfaces take on different roles. At 90 degrees for example, you would have to use the rudder to pitch the nose up to maintain altitude? And upside-down the elevators would have to be operated in the opposite way to normal flight? And the transitions would be very tricky. Like trying to fly a brick I would imagine.
The late [Sir] Douglas Bader, the RAF fighter ace of WW2, did a barrel role in an ancient aircraft very close to the ground. He crashed badly and lost both his legs [in 1931 I think], but went on to fly combat missions in WW2 until he was shot down in 1941.
There are bold pilots, and old pilots, but no old, bold pilots, as the saying goes. I think his engine lost power as well, because it had a gravity-feed carburettor feeding the pistons.
But one can understand the appeal of doing something like that, even if it is not terribly safe.
Thanks Peter for all the details you provide into an elite group of people. I have a question for you concerning the topic in the video. During a such step bank or roll, would the fuel pumps still supply fuel to the engines or is there a risk of fuel starvation? Many thanks for taking the time to making such an excellent channel.
Excellent video as always, really informative!
loved how we actually got to see something like that in a sim, awesome!
Sitting on the side, suddenly dangling from my seat belt looking straight out the window on the other side at the ground. Much more than 30 degrees, trust me. C-17 combat roll taking off from Bagram. Those guys have waaaay too much fun coming up with combat rolls, did mean we weren't a predictable target so it was worth it.
That dog has the answers for all our questions.
Yep: 42
This presentation is awe-inspiring, keeps you spellbound, a huge appreciation and thank you to Mr.Mentor Pilot.
I love your little dog, he is really beautiful.
I remember watching a video about the 707 when it was first displayed to the public as a new air liner and the test pilot rolled the big airliner as he flew over the crowd of observers. Obviously that was quit the show. I recall the stunt was not planned and he was reprimanded but got away with it because the test plain was not damaged and it was a hell of a sales pitch for the new bowing air liner. ;)
I've seen the video of that, it was done very gracefully. =)
In Germany Werner Baake did the same with the D-ABOP, but he overloaded the plane and crashed, killing everybody onboard...
So: don't try this at home!
Very informative videos. Good education and entertainment. Looking into starting my private pilot training myself.
Best of luck!
It’s pretty amazing how much you know about this stuff great job 👍
I disagree, I was on a flight over the caribean in a dreamliner, during storm season when we hit extreme clear air turbulence. The plane stalled, the pilot lost control and we tipped forward and to the side as if we were about to do a cartwheel somersault combo. the drinks trolley went into mid-air in slow motion and the pilot tried a few things but ended up rolling to escape the situation and bring things back control from what seemed like a spiralling nose dive. The drinks trolley ended up above the headrests slamming into the cabin wall nearly killing someone.
I've been flying 2-3 intl. return trips a week for over a decade and never saw anything like it - I knew it was bad because the cabin crew were grabbing onto the chair legs screaming and crying for their lives. It took me 3 years before I was fully comfortable flying again and still get jumpy with bad turbulence.
This is what I am always fearing - turning while flying in turbulent conditions or hitting unexpected turbulence. Isn't it likely that the turbulences cause the plane to tilt over when it is already in say a 30 degree bank? @mentourpilot
This is the craziest first-person account I've ever heard. Wow.
I would not even be mad, that's one Hella of a way to go out of this world. I hope you got a free drink after that!
“I’m talking too much and flying too little.”
I feel called out. 😭🤣🤣🤣
Aviate > Navigate > Communicate
@@DaedalusYoung Yes, I know. I was just joking and referring to how much pilots like to chat.
Woah nice tree! We can’t have a fancy tree let alone a real one because of our kitten.
Nice video by the way
Notice the balls have a dull finish. Cats love to destroy the shiny glass ones.
Kill and eat the kitten. Enjoy your tree. I love trees too much to cut them down.
If you anchor the tree, it should be fine. We used to have cats in my family and we'd use some nails and fishing wire to stop the tree from falling. They'll still play with ornaments and try to climb, but it should keep the tree up.
Poor dog is stressed out. It's been a ruff day of breathing. Lol
Get a poodle.
Mentour the Stunt Pilot!! 👨✈️
18:24 Successfully rolls the aircraft. Legend.
EveryTypeOfVideo Legendary 🤓
@@Menstral - Not only that, afterwards immediately levels it up to 10K ft
18:45 - Mentour Tex is our man🤣
I love your dog, it looks like a teddybear :D
This is the guy I want sitting in the left hand seat of my flight.
Steep turns! Am just getting used to them after watching more aviation videos and understanding some of the dynamics of flight and this particular video has explained the subject best. Steep turns can really get to a nervous flyer especially right after take off, you get an unexpected bank to either side! Oh the marvels of modern day aviation. As always, great video Petter!
The one to remember is load factor = 1/cos(beta), where beta is the bank angle. That's assuming you're looking to maintain level flight.
A normal 30° turn results in about 1.155g. Dial that up to 60° and you're looking at 2g.
@@233kosta I doubt the average passenger who be thinking about that as they experience a steep turn seeing the plane bank to one side rapidly.
3:43 to watch the doggo jump 😂
Wtf is a "doggo"
100DollarBillYall A doggo.
100DollarBillYall an elephant.
100DollarBillYall ...
*FACEPALM*
@@100DollarBillYalla doggo's just a grown up pupper
"Do a barrel roll!"
-Peppy Hare in Starfox 64
"To do a barrel roll tap Z or R twice"
Thanks Captain🙏🙏
You beat me to it
Back in the 90s, I was the photographer for FAA Director David Hinson and when the new version of the MD 80 aircraft came on the scene the factory pilot did a barrel roll over lake Michigan just east of Chicago a few days ahead of the Chicago air show. I was lucky enough to be on that flight and other than looking out the window, you would have no idea it was a barrel roll. And no, the plane didn’t make any crazy sounds in the passenger compartment. It felt like it was built for it. Was it? Thanks for the great videos!
Well the perceived gravity in a turn is actually a pleasant side effect of making the most efficient turn in an aircraft... But yeah that maybe more difficult to explain...
Oh well the vectors of lift are explained later on...
OK can we just call it that at least one of the dogs must be present in all videos?
One of the dogs always is! It's usually the brown one. I think it is a simulator dog as it never moves more than 3 feet from any given position on the sofa and never moves off the sofa at all. The white dog is more of an "Easter Egg" buried deep in the simulator code.
Yes it should be part of the video's Minimum Equipment List! :D
Many thanks MP for your great instructional ability to transfer normal and technical aviation information in all of your work/ videos. From my perspective...you are simply the "best" - keep up the good works.
FedEx flight rolled to subdue an attack from a fellow employee pilot.
The pilots were being attacked by another crazy pilot with an axe if I recall.
Yeh the guy was a fighter pilot n knew what manoeuvres to do
I think he had a hammer
@@fritsfelix8423 Hell could have been worse than that one thing is for sure gravity will not care what is in the way when it eventually brought the uncontrolled plane back to Earth.
He wasn't a pilot, he had a hammer, and he was aboutta be sacked and knew it. Tried making it a 'workplace death' so his ex and kids would benefit from that sweet sweet payout. The pilot who managed to roll the plane did so because half his body was paralyzed from the attack; it was all he could feasibly do to try and save his two buddies from the rood boi.
Now i see ,you have second pilot at that coach:)
Coming into Burbank in a 727 in the early 1980s, the pilot announced that the radar was out at Burbank, so no ifr. Ceiling was 3,000 ft with broken clouds below. We didn't want to go to the wrong airport, did we? So he said we would be doing maneuvers we do not usually do because vfr you can't fly into cloud, but don't worry, completely safe. We flew across San Fernando Valley at low altitude making turns with seemed like 90 degree bank. I was looking out the window straight down, and it was close. Cabin was silent with gasps as we got to the apex of the turns. Applause after landing. I think the pilots enjoy it.
That was a great example! Thanks for taking your time to create great such great content.
Great video, and a very clear explanation.
Could you do a video about why the pilots of Alaska Airlines Flight 261 attempted to fly the plane inverted? Obviously not an ideal way to go, but curious why they thought it might help the situation.
The control surfaces were jammed due to mechanical failure, resulting in the plane inverting without the pilot input. They attempted to hold it simply to buy time, with no means of returning the aircraft upright.
This is very interesting , Me and some coworkers were just talking about this a lunch to day and your channel. None of have any flying experience, but we both watch your channel.
When your dog sits to your right it's brown/red. When on your left, it's white. Magic!
That are some serious skills right there. Impressive!
Thank you!
@@MentourPilot ... +1. Pretty impressive how you keep the altitude in control at 60 degrees and with the stickshaker active about as well as in straight and level flight.
Some trivia:
On August 6th, 1955, Pilot Alvin "Tex" Johnston performed not one, but _two_ barrel rolls of the Boeing 367-80 prototype. This single prototype was the basis for both the Boeing 707, and the KC-135 fuel tanker (on which, I was a jet engine mechanic).
The rolls were maintained at about 1 G all the way through. There were press aboard during the time, and this perfect 1 G roll kept them confortable enough to snap a few pictures out the windows during the rolls. There's a really eerie photo of the wing hanging upside down relative to the geound. Theres also some grainy video from thw ground of it doing these rolls on youtube.
These barrel rolls were unsanctioned. It was simply supposed to be a flyover of an air race. When chewed out by his boss at Boeing, Tex claimed he was simply selling planes.
In fact, this may have actually been the case. Among the many aviation industry representatives sent to the air races, a few were USAF. Seeing such a big airliner perform what was ostensibly a combat maneuver, may have cemented their earlier decision to pick the KC-135 tanker over the as yet unbuilt DC-8 tanker.
Even more trivia for you, Tex Johnston (and his mannerisms) was the inspiration for "Major Kong", the comically and unstoppably heroic B-52 pilot in Dr. Strangelove (If you haven't seen the movie, maybe you'll recognize the meme of a cowboy riding a nuke. That guy is based on Tex Johnston).
It wouldnt be the only time a KC-135 was rolled, or otherwise thrown into extreme maneuvers... Though it may be the only time a roll was done intentionally. There are a few incidents where KC-135s lost a pair of engines on one side, throwing the plane out of control. I can also think of an incident I heard about where a KC-135 broke the sound barrier in a dive to escape migs.
_______
As a jet engine mechanic on KC-135s, I had to get an engine run certification for it. An easy way to practice engine failure procedures, the base had a full motion KC-135 flight simulator the instructor scheduled an hour on. Naturally, we plowed through our engine run stuff to finish off the hour playing with the flight simulator. Bare in mind, I'm a jet engine mechanic, not a pilot. But, I did grow up playing the crap out of home flight sims.
The go-to thing these classes would try is a barrel roll. Usually ended in failure. In fact, the previous class briefly broke the flight sim, as they some how managed to go past the limits of the hydraulics while attempting the roll. So we left motion off while messing around with it to avoid breaking it again.
First time I tried it, spent too long in the roll, and it dove inverted and oversped within seconds.
Second time though, I throttled up to max, dove a little bit, pulled up and to the right, then I cranked the yoke over 90 degrees left while holding some back pressure, and kinda shocked the other guys on the flight deck after pulling all the way through and levelling off. I'm sure it was sloppy. Definitely no Tex Johnston roll. I was just happy I kept it consistent at a little under 2.3 Gs all the way through (which my GAC friend in the copilot seat informed me is the limit for an Over G inspection, so I guess I came really close to "breaking the jet").
Anyway, that was one of the most memorable experiences of my life.
PS, for reference, although the Boeing 707/KC-135 is a 4 engine aircraft, they were build when jet engines were in their infancy, and had poor performance compares to modern high bypass jet engines. As a result, theyre actually quite small. They're about the same size as 737s. I'd estimate KC-135s are a little bit longer, but a little bit skinnier.
Whenever we parked a KC-135 on wash rack, sometimes Navy P-8 Poseidons would be scheduled at the same time as well, and park in really close in the opposite direction so the wings dont hit each other. It was a good way to compare aircraft sizes.
The P-8 is essentially a Boeing 737 that has been converted into an antisubmarine warfare aircraft... It's actually a pretty nutty plane in its own right, basically a 737 bomber. It has a bomb bay in the back, just behind the wing roots, which can drop depth charges and sonobouys. And I remember they had external hardpoints on the wings, for torpedoes, and I think one of their crew even told me it can carry anti-ship harpoon missiles.
Scary? That's the most fun time in a flight. Especially when they bank over my city (Las Vegas), the view is unbelievable.
Vegas has the scariest flights and you can't see it coming
"Don't try this at home."
Dude, if I had a $6M simulator at home, I'd do whatever the heck I want with it, and finding out whether they programmed it to accurately simulate a tailslide into a falling leaf is high on the list.
He probably meant with a actual aircraft
Back in the early 80s at the Dayton Air Show my sister and I got to go up in an open cockpit stunt biplane. The minute that pilot saw 2 young women back there he gave us a devilish smile and the ride of our live! He took us up and did rolls, barrel rolls and everything he could think of. We screamed the whole time but I have to admit, it was one of the most exciting experiences of my life!
Mentour please make a Christmas special with your family
I might do something like that!
You first! :)
Man amazing video. Your explanation of the physics is spot-on! Keep up the good work. You have helped me a lot overcome my fear of flying by understanding more about what it actually looks like flying from within the cockpit. If you manage to correlate your scenarios more (maybe with visual aids) with what the passengers are more likely to experience from their point of view would be ideal.
The most dramatic plane ride i’ve been on was landing in old kai tak in hong kong.
1:02 I kinda think you'd want to try that at home, and not in the air!
Do not try it in a cockpit.. at all
Depends what you're flying @@MentourPilot