I love that you cover accidents with no fatalities - you choose your topics based on the pure interest of the cause, not the gruesome numbers and it makes for excellent videos. You're not relying on casualties to make the video enthralling.
I was just about to comment something similar. I really appreciate that there is so much high quality material about air traffic accidents on UA-cam by now, that not only complete catastrophes get covered, but also minor crashes with no fatalities and even near misses.
Yeah, I honestly usually only watch the non-fatality ones as the others are too depressing, and I come to the comments to find out if it has fatalities or not. Please could Mini Air Crash Investigation make a playlist of "Fatalities" and one with "No Fatalities", for viewers like me? It would be FANTASTIC!
Well, I think that contact lenses, whatever the official report states, were only a minor component in this accident. The inaccurate weather information, the lack of proper cockpit procedures and the aborted take off while our MD80 was on short final were all much more important. Of course, the easy option is to blame the pilot and this is exactly what appears to have happened.
Totally agree. Although I would add the delayed/inaccurate vertical speed indicator as a substantial factor as well. (In addition to poor visibility and nonstandard runway light spacing.)
I agree also. I'm retired now, but wore contacts (hard lenses) throughout my aviation career...from a CFI at 18 years old until finishing at a major U.S. carrier. Never had any problems.
Yeah, I'm wondering how many hard landings delta had in this aircraft. It seems the lenses only exacerbated a psychological phenomenon of thinking you're higher, combined with everything else. If the lenses made a 5-10% increase in perceived positioning, then even other pilots would have been slamming the runway in weather like this. Think of it as a navy landing instead of airforce. Plenty of videos can explain what that means haha
@@ntdscherer Hard contact lenses didn't allow oxygen to reach the cornea directly. The only way oxygen could reach the cornea was indirectly by tears washing under the lens each time blinking occurred. When the cornea doesn’t get enough oxygen, it can swell. This can cause hazy or blurred vision. So yes, it is relevant.
Great video! I have 3 points: 1) during nearly every FAA physical, before the eye test the nurse or Dr. would ask "are you wearing contacts?" and "do you wear contacts?". 2) on a CAT I ILS you don't need to see the runway at 200' to continue. You need to see the "runway environment", usually the approach light system, you need to see the runway to continue below 100'. 3) as an instructor a common problem on short final when a go-around is likely is pilots start inching up and above the glideslope. This results in crossing the threshold high if the landing is flown. Stay on the glideslope until you or ATC decides a go-around is indicated. Sounds like the pilot, concerned about a possible go-around got a bit high and his correction brought him through and below the glideslope. Be safe.
I've definitely learned something from you here. I've been wearing contacts for 40yrs & until just now knew nothing about how they can distort vision. As always a really interesting video.
I think you'd instinctively know they distort vision, as it is what they're designed to do. lol. It's more a matter of how they distort vision beyond the limited parameters you would think they would do. Same with sunglasses in a way (and probably transition lenses too), you'd think they'd only 'distort' the amount of light coming in...but in the right circumstances, they'll totally block ALL light, especially from things like computer screens...
I wore contacts for decades, hard lenses then soft lenses. I did have one type of soft lens that was less than optimal for night driving. Colors were off and depth perception to shadowed objects was pretty bad. Worse still, they seemed to cause excessive nighttime fatigue. I had to use a specific type for road trips.
@@SignedOff402 The good ones are Air Optix Night & Day by Alcon (they used to be made by Ciba). They're also good for extended wear as long as you don't go a crazy long time. They were the best I ever wore and great for driving, plus easy and convenient in general.
I switch to my glasses during night driving, I couldn't find any good lenses in my prescribed strengths. I don't want to take any chances, so I wear my coca cola bottle glasses...😒
DUDE, I just have to say you have kept me sane the last few days. I have been cleaning out the house we're moving out of, and because I kept going "Oh crap, where did I set my phone," I wanted to have something playing on it so it wouldn't get lost. But I had my kids all over the place, it had to be something clean and non-violent, and I wanted a nice calming voice. YOU, man. You were perfect. Your voice is pleasant, consistent, even, your delivery isn't sensationalized or dramatic, your volume is totally even throughout, I can set your videos to auto play and just leave it going. Thank you SO. MUCH.
I'm subscribed to a ton of aircrash investigation channels and I watch all of their videos. I can definitely say this is the most underrated channel ever. Can't describe what I feel everytime I hear "THIS, is the story of...." ❤️❤️❤️
I am subscribed to a LOT of aviation channels, but I cant for the life of me understand how this channel doesnt have over a million subscribers. Maybe some people like the more "theatrical" type of channela, but I myself prefer this straightforward no frills delivery without long explanations of minor technical things that pretty much all of us avgeeks already know. Best of luck to you man!
Great audio level. Very much appreciated. This pilot apparently did not disclose his eye condition and wore contacts to tests. If he disclosed, he would have been advised about the regulations regarding allowed and/or recommended eye sight correction devices like contact lenses or glasses. When in the know, he would have informed his optometrist about the rules. Also the FAA is in the wrong, here. The FAA cannot expect optometrists to ask what profession their customers have.
I think the title of this video causes viewers to put too much emphasis on the pilot's contact lenses. I think this was a minor contribution to the crash. It seems to me that much larger contributions came from the poor visibility, the nonstandard runway light spacing, and the highly inaccurate vertical speed indicator info. (Also would've helped a lot if the first officer had called out the altitudes as the plane was approaching.) (Aren't they required to do that? I thought they were.)
An optician always asks if you drive I don't drive I'm disabled and I've found your perception can be distorted even with glasses which firne is worsened with my brain not being right with bpd and possibly disprexia and I often have dissociation episodes. On stairs with silver metal grip bars I'm careful cos I can misjudge steps yellow strips no issues. I doubt idvd allowed a driving license and ifihave issues and don't drive cos of risk what about pilot id want my pilot if I did fly to have perfect vision . I personally think pilots should have to have perfect vision, idbemire concerned about that than pilot mental health issues
Very interesting-- had no idea that certain contact lenses could adversly affect depth perception. I knew that some types of eyeglasses could alter depth perception, but I also knew that the brain quickly learns how to compensate. A very weird set of circumstances, indeed. Glad all got out relatively unscathed! 😊 Nice job!!
Such a pleasure to sit back on a Saturday afternoon and listen to our treasured host recounting in his smooth, East Coast/mid Atlantic tones, the usual succinct, yet detailed and unfortunately harrowing account of some or another dramatic airborne tale unfurling before our very eyes.... for me, it truly is meditation! In this case, as having heard dozens if not hundreds of these, it once again reminded me if the oh so very human element in flying an aircraft. All the instruments in the world dont compensate for visual clues: you see the ground - you want to get on it. Moreover, even where the instruments ARE used, this, even more illustrates the difference between incident and disaster is often literally seconds. Exactly as described, I could feel the young first officer "doing it by the book " and the "resinous old salt" doing it "by eye" and that's because, quite simply, I believe to this day that instruments AREN'T as immediately reactive as the human sense so, whatever training is given, ultimately the senior commanders, still steeped in WW2 technology (which I think hasn't really changed much for 80 years....) go "by feel". And I'd have to say, thank Christ they do. Just like the Air France flight that crashed into woods at the end of a totally ill advised ultra low fly-by, the 5 second delay here from "the tech" caused this prang.... if the pilots had had perfect centisecond info relayed, this wouldn't have happened.....
I’m not sure what all the different contact lenses are banned by the FAA but I wore contacts that corrected for far and near vision. One contact corrects for distant vision, and the other for near vision. The contact that corrected for near vision wasn’t 20/20 but the other one was exceptional for distant vision. Aeromedical at my airline said they were okay with the FAA. Never had any problems with depth perception. Depth perception with both eyes is 18 feet and in the landing, you’re gonna always be that far above/far out from the runway anyways. This captain made up an excuse to get out of trouble.
If the video is an accurate reproduction, the report missed something pretty important. The set of 4 lights to the left of the runway near the approach end is called a PAPI - precision approach path indicator. The number of red vs. white lights showing indicates to the pilot whether they are on the glideslope: 2 red + 2 white is "just right", more red = too low, more white = too high. Even if the ILS or radio altimeter could not be trusted for whatever reason, the pilot should have known he was below glideslope when he saw 3 or 4 red lights on the PAPI.
@@777Maranatha No, very small airports often will not have them. But an airport large enough to be served by an airline usually will, at least in the USA.
I don't know how many will see this but since it wasn't really explained - monovision lenses are where one contact lens corrects for distance vision and the other corrects for close up vision. Since the eyes aren't both optimized for distance viewing, this is where the effect on depth perception comes from.
Why wasn't the radio altimeter calling out altitudes? I had no idea about contact lens issues. When one of my happiest days comes, having a pilots license, I'll have to see if my contacts are the right kind. I'll bet very few GA pilots and possibly commercial pilots, know about the lens differences. That's a massively important thing to know! Thank you for bringing it to our attention!! Great video, as always!!
There are multifocal contact lenses which allow for both close and long distance vision (close when looking downwards, so he would be able to focus on instruments), although they are far more expensive than monovision lenses, which are simply regular lenses where you put one lens for close vision in one eye, and a far vision in the other. Unlike monovision lenses, there is no problem with depth perception, but it doesn't really seem like this was the main cause of the accident anyway. At long distances depth perception is negligible anyway, and vibrations in the cabin/slight movements of the head would give about the same depth information. The biggest issue in this accident seems to have been the lack of visibility and out of date/delayed rate of descent reported by the instruments, which pilots hadn't been made aware of.
That visual illusion is called the blackhole effect, where its hard to differentiate distances. As a pilot who wheres contact lenses, I believe you are highly inaccurate on blaming that its the contact lenses. This same thing would happen to any pilot even those without contacts. Plus the first officer wouldn’t immediately call a go around based off decent rate, he could have called for slight adjustments to the landing based off decent rate and altitude
Do you wear monovision lenses? I know the video didn't really explain it at all, but it's that specific type of prescription that may have caused the problem.
I had cataract surgery done on both eyes, in 2013. The artificial lenses that go back into the capsule that sits behind the iris, are NOT measured to be exactly the same magnification in both eyes. That is to enable the binocular vision to remain intact. You can however request ones that are more conducive to short-range, medium-range, or long-range vision. I chose medium range. I still have to have "readers" for reading, and rx glasses to drive. Or get bi-focals. Anyway, it makes me slightly dizzy to be outside, looking further away due to those different lenses in the eyes. It takes me a minute for my eyes AND brain to adjust to it.
I feel terrible for the passengers. Just imagine you've spent the entire flight dreading your impending arrival in the nightmarish hellhole that is LaGuardia, only to crash upon landing there.
"the medical examiner could not have known..." What? You look in their eyes. Contacts are quite obvious to see. I worse lenses for my FAS medical exams and declared them. Even if I didn't the examiner could see fornthemsves if I could pass the eye exam with or without them and make a determination.
Given that Delta announced its saving millions because they got rid of most of their senior high paid staff and have a "juniorocity" staff now. This makes me nervous. Read the business insider article of this week.
I've been wearing glasses since the 7th grade (should have done so earlier, but hey, I just sat closer and closer to the front of the classroom). Anyway, I've never used contact lenses as I never could past the issue of sticking something in my eyes. And back then all we had were the hard lenses. Great job with the video and the explanations.
I don't think it's good for a person to wear "corrective" lenses. They force the eye muscles to remain stunted in how much they can actually see without the lenses That's why longer periods without them can begin improving eyesight - the eye muscles have a chance to be more fully exercised. What really causes vision to deteriorate like this in the first place... I've heard about alcohol consumption during pregnancy being a factor, but that's not always the case.
I know the feeling. I didn't get glasses until 6th grade but I needed them earlier. Didn't really notice it until I finally mentioned to somebody that I couldn't read the chalkboard. I've worn them ever since. I've tried contacts before but apparently my eyelids are tight because the first time I blink they leave. I've tried newer soft ones older hard ones pretty much all of them and once I got past the phobia of plating my finger on my eye I found I just couldn't keep them in so it's Zenni optical for me all the way
I was taught even in my early C-150 days that the VSI is a lagging instrument. That was also repeated in my C172 & C182 IFR training. I can't imagine that I'd forget that in multi-engine, commercial, or airline pilot training.
I believe the abbreviation MV is referring to MONO VISION contact lenses rather than MONOCULAR VISION contact lenses. Monocular vision means vision out of one eye and unless you only have contact lenses in one eye they can't be monocular contact lenses. If you are using both eyes (usually a prerequisite for holding a pilot's license although there are exceptions) then regardless of whether you are using glasses, contact lenses or nothing you have STEREOSCOPIC not MONOCULAR vision. Stereoscopic vision is what is used for short distance estimation whereas longer distances use angular size to estimate distance and MONO VISION contact lenses can alter your long distance perception in exactly the same way single focal length glasses meant for reading would. The other main type of contact lenses are bifocal lenses that use two different optical corrections, one for close vision (reading instruments et cetra) and the other for viewing object at a distance (outside the cockpit). Bifocal contact lenses will also alter you long distance depth perception, but not as much as mono focal length lenses would. It's exactly the same as using mono focal glasses rather than bifocal glasses. The mono focal lenses only correct for reading and things that are close, if you use them to view objects at a distance they the view will be distorted and most likely out of focus and blurry as well. I realize this is nit picking, but the difference between mono vision (meaning one focal length) and monocular vision (meaning viewing through one eye) is rather important in this situation. In reality pilots really need TRI-FOCAL (yes they are a thing) glasses or contact lenses as they need to view objects that are close to them both below (instruments & center console) and above (overhead console) the normal long distance objects through the cockpit windows in the middle of their vision.
Today, one of the items that we must check in the FAA medical aplicaron, is the one that questions "Do you wear near vision contact lenses," and if you check "yes" you are probably going to be denied your medical. After all these years going through medical examinations, I have never met any pilot who wears NV contacts. Good video as always MACI.
I think it's "MV", not NV. As in "monovision". So one eye is fixed for far seeing, the other is fixed for near seeing. On normal casual usage, the brain will adapt. But one definitely loses a lot of distance estimation.
@@jannamyers6792 Not really, the FAA are the ones that make everything a hassle. For instance, you must report every single visit to any medical doctor or facility/clinic in the previous three years, but not only you must report your visits, you must put their names, their addresses, telephone number, reason of your visit, the names of the prescribed medicine(s), and dosage. So it is a big deal and what's more, it is a way for big brother to snoop into your life.
I wear approved aviation contact lenses which enhance my vision. I can't believe this pilot's medical examiner did not even know he wore lenses. It should have been declared by the pilot in his questionnaire and his eyes checked by the doc. What else was the pilot unwilling to declare?
As an avid user of contact lenses, the dangers really don't surprise me. When in low light or low humidity (both applies here), vision can get blurry because the eyes tend to dry out faster under these conditions. Even worse, when we focus on one thing for a long time we tend to blink much less which massively contributes to eyes drying out. All of this can severely impact the vision.
I was wondering why driving seems off, now that I'm regularly wearing contact lenses. I'll talk to my optometrist about this, see if I can get a different pair prescribed next time
I'm blind now, but back in the day, I wore contact lenses. They were a constant source of pain. Yes, I can believe that contact lenses could cause enough distortion to cause a plane crash.
@@232K7 Well, there's this bit of technology called a keyboard... But what you really mean is, "How do you read the screen?", right? I use a screen reader. The one I use on my computer is JAWS. Siri on the iPhone is the same idea.
What about the PAPI lights (Precision Approach Path Indicator)? Surely that would have been a great clue to either pilot that the approach was way too low. Did they mention that in the report?
I have terrible vision and have been wearing glasses/contacts for most of my life. On top of it, my eyes are extremely imbalanced in their awfulness, with astigmatism in one eye but not the other. This would have been a nightmare scenario for me- I avoid driving at night, even streets I know well, because I can't trust my depth perception in low light.
Instead of abbreviating the type of contacts to MV, it would add to our understanding if the entire word were said each time. We lay people who wear them, at least among those I know, never use the description "MV" when referring to them.
I'm at the age where I need corrective lenses to drive. When I got my prescription glasses, I noticed lots of distortion. While they help me read signs, I can actually see to drive better without them. I get sharp focus of what's in front of me with the glasses, but I'm finding out that there's much more to seeing, than just sharp focus of what's directly in front, and in order to get that, we sometimes sacrifice other qualities and end up with something worse, not better.
Contact lenses or spectacles do affect depth perception but it takes like 2-3 days to get used to it. For a pilot it may take a few landings but once he has got used to it, I dont think there would be any problem.
This is my favourite aviation accident channel I love it that you cover interesting cases like this... who knew contact lenses could cause something like this
@@gregorylaco6193 personally I have no issues with how the videos are produced but if you do you don't have to watch them. That's the great thing about UA-cam you can turn off things you don't like
Yup, and he still had glideslope indications to back himself up on too. And a qualified FO who could have taken control as he realized the imminent crash. Blaming this crash on contact lenses is a wild red herring.
What if they were on the correct glide slop until the last second? What if the PAPI lights only turned red after it was too late to do anything? As someone who also wasn't there, I'd be hesitant an asserting certainties...
@@XemawthEvo2 The captain's bars are 1000' down the runway. If the PAPI's went red at the last second, they would have hit tarmac not approach lights. They would have seen 4 red PAPI's starting at least 10 seconds prior to touchdown, more than enough time to correct or go around.
! With two pilots, why did neither check the glide slope needle? There was a note the ils was unusable below 200'. The deviation below glideslope was caused by the rejected takeoff ahead of them. Then they were flying an unstable approach. More than one dot below glideslope nearing dh (decision height) would have been reason for me to go around. The contact lens issue would not even been a problem if they had not deviated below glide path.
F.O. was monitoring instruments during the approach. They both became distracted with the departing aircraft's RTO...bad call by ATC clearing them for takeoff IMO...
Hoping that more modern aircraft do a better job of monitoring and reporting on discrepancies between readings of conflicting altitude and speed data. Knowing your height above ground may not be where you expect would seem useful during a landing. Great job on this one. Interesting insights.
What was that little plane that flew in from the right just as the plane was landing at the end of the video? It gave me a heart attack. Fantastic work, as always. Love your channel.
Ive got a complaint about your latest playlist. Ive watched all your “Aircraft Happy Endings” playlist and in not one of them did someone receive a happy ending.
AFAIK all VSI's lag behind the real vertical speed. A VSI measures the difference between the current static pressure and the static pressure 'some time ago', the latter is measured in an air chamber that loses or gains pressure slowly. As one of the measurements is from 'some time ago', your reading on the VSI will also be from 'some time ago' AKA, it lags behind by design. There's a reason it's called 'indicator' I learned this in my PPL(A) ground school already. Weird that the FO forgot about this. You can see this for yourself in a sim. Fly straight and level, then push the nose down seriously. You'll go down visibly, but the VSI will take some time to catch up with your descent speed. Then pull up, the VSI will lag behind again.
I had no idea contact lenses could do that! I’ll have to make sure my future eye glasses prescriptions are okay… Anywho, a little not: the VSI delay you noted is not unique to the MD-80. It’s a bug in every VSI in every airplane ever! This is something we learn at the private pilot level, so I am very surprised so many of the pilots apparently didn’t know about it.
Yes, I have a PPL, with aerobatic certification/endorsement. Generally speaking, contact lenses are much better than glasses, because I get a much better range of vision. But once I remember executing a series of aerobatic manoeuvres, when the Velcro strip holding my headset on came adrift during the initial loop (while inverted), unfortunately the microphone knocked out one of the lenses,, a little disturbing, however I managed to get the aeroplane straight & level - but luckily I found the contact lens and reinstalled it
A lot of CRM issues here!! The Captain should have stayed on the instruments until the FO said HE, the FO, had the runway in sight! And the the FO should then have monitored the ILS Glide Slope until they where over the runway. The tendency in a low approach is to 'duck under' when going visual after an Instrument low approach. Therefore it is incumbent upon the pilot monitoring to insure that they pay close attention to the aircraft's position relative to the correct course and glide path until touch down in the Touch Down Zone is assured. I can't even begin to count the number of low approaches over the years that I had to literally yell at the FO to - pull up - because when they went visual after I called the runway in sight they then tried to 'duck under'! Even without his contact lens issues the Captain was setting himself up for problems by going visual early! We talked a lot about this accident at my next recurrent ground school.
I once had a contact fall out of my eye during a 25man raid in World of Warcraft. Everyone survived there too. Interesting to know - I find my eyesight a lot more accurate with contacts but if your eyes get dry there's certainly problems there, and contact technology has hopefully improved since 96.
Not monocular vision - that would be vision with only one eye. Two things - monocular depth perception cues, which don't rely on the parallax from the two eyes - and monovision contact lens prescriptions.
I know a thing or two about contact lenses and flying........in 1989, I was a 727 captain beginning my transition to L-1011s when I was diagnosed as having keratoconus in one eye. Hard contacts were the only thing available at the time and they were not approved for flying and thus, ended my career as pilot. Also, the vast majority of VSIs (Vertical Speed Indicators) have lag. In fact, I've only heard of instantaneous ones, never actually seen one. They are a secondary instrument, not to be used to determine descent rate during the final phase of an approach. I wasn't there so I can't say for sure but it seems to me that if the nose was raised in preparation for a possible go-sround, then the approach became unstable and a go-around should have been initiated based on that alone. Again, I wasn't there so I'm guessing at best.
I was on that flight. We were just commenting on how foggy it was and grew concerned with our chances of getting to the runway safely. The person seated next to me then began lightly cupping his hand over my genitals. The Mets spent way too much money on its payroll. Hi.
With all these mechanical, instrument, weather and pilot errors I see in all these incidences and accidents, I never want to fly again. Tho it may be the safest mode of transportation, I just can't believe that traveling by air will get me to my destination, I should stop my addiction to these very informative critiques. I guess they just terrify me like a bad dream. You do a great job but even you can't ease my concern when there are so many variables.
Nice Video, being too lazy to Google do you know what happened to the Pilots after the review. Seems that they were battling with some things out of their control/knowledge?
In the end clip where there was a plane going around and another one trying to land on the same runway as the player, are those other players or just bad AI?
I took a few flying lessons 40 years ago and I still remember that some instruments have lag, I can't believe that those passenger pilots didn't know it too.
The vertical speed indicator can be traditional which is a calibrated leak and thus have a lag. Or it can be an iVSI which is instantaneous. The plane I fly has an iVSI yet some pilots think it’s not.
On md80s that lag too far behind.actually 6 to 9 seconds , I'm sure they knew that as a professional and type rated pilot but the speed and rate of change of event in that a/c is a blink of an eye. also night landings are if much more courage.
@@imaPangolin I don't know what an iVSI is, but I guess it is some sort of radar VSI. I would be surprised if they hadn't come up with something better in 40 years.
I was struck with the fact that there are no standards for spacing runway approach lights, and that they aren’t designed to radically deviate from the actual runway lights.
at 3:13 you said they would have to go around as soon as they hit their minimum decent altitude. i think you got decision altitude and minimum decent altitude(mda) mixed up
Why do you need to rely on your contact lenses when you have a string of flight instruments and a FO to help to get your aircraft on the ground safely? Sounds like other factors were in play.
Like so many of these incidents - a series of seemingly unconnected things cause an accident. Luckily, the lessons learned from this accident flight were not written in blood.
WoW when did the FAA change their Eye test requirements? Currently the requirements is "Both eyes separately". A person with uncorrected monovision could never pass the test. Yes I wear glasses when flying but do not have to when driving.
So, in short, the crash wasn't caused by the contact lenses. It was bad use of imperfect systems, in a low-visibility and cutting-it-close situation, which led to a destabilized final approach. If the pilot had worn glasses instead, all the other factors would remain, and the crash still would have happened...
I love that you cover accidents with no fatalities - you choose your topics based on the pure interest of the cause, not the gruesome numbers and it makes for excellent videos. You're not relying on casualties to make the video enthralling.
Yeah I like the ones where everyone walks away
@@MiniAirCrashInvestigation #Metoo 😂
I was just about to comment something similar.
I really appreciate that there is so much high quality material about air traffic accidents on UA-cam by now, that not only complete catastrophes get covered, but also minor crashes with no fatalities and even near misses.
@@MiniAirCrashInvestigation same
Yeah, I honestly usually only watch the non-fatality ones as the others are too depressing, and I come to the comments to find out if it has fatalities or not.
Please could Mini Air Crash Investigation make a playlist of "Fatalities" and one with "No Fatalities", for viewers like me? It would be FANTASTIC!
Well, I think that contact lenses, whatever the official report states, were only a minor component in this accident. The inaccurate weather information, the lack of proper cockpit procedures and the aborted take off while our MD80 was on short final were all much more important. Of course, the easy option is to blame the pilot and this is exactly what appears to have happened.
Totally agree. Although I would add the delayed/inaccurate vertical speed indicator as a substantial factor as well.
(In addition to poor visibility and nonstandard runway light spacing.)
I agree also. I'm retired now, but wore contacts (hard lenses) throughout my aviation career...from a CFI at 18 years old until finishing at a major U.S. carrier. Never had any problems.
@@captaind6178 Were they monovision lenses? If not, then that isn't really relevant.
Yeah, I'm wondering how many hard landings delta had in this aircraft. It seems the lenses only exacerbated a psychological phenomenon of thinking you're higher, combined with everything else. If the lenses made a 5-10% increase in perceived positioning, then even other pilots would have been slamming the runway in weather like this. Think of it as a navy landing instead of airforce. Plenty of videos can explain what that means haha
@@ntdscherer Hard contact lenses didn't allow oxygen to reach the cornea directly. The only way oxygen could reach the cornea was indirectly by tears washing under the lens each time blinking occurred. When the cornea doesn’t get enough oxygen, it can swell. This can cause hazy or blurred vision. So yes, it is relevant.
Great video! I have 3 points: 1) during nearly every FAA physical, before the eye test the nurse or Dr. would ask "are you wearing contacts?" and "do you wear contacts?". 2) on a CAT I ILS you don't need to see the runway at 200' to continue. You need to see the "runway environment", usually the approach light system, you need to see the runway to continue below 100'. 3) as an instructor a common problem on short final when a go-around is likely is pilots start inching up and above the glideslope. This results in crossing the threshold high if the landing is flown. Stay on the glideslope until you or ATC decides a go-around is indicated. Sounds like the pilot, concerned about a possible go-around got a bit high and his correction brought him through and below the glideslope. Be safe.
I've definitely learned something from you here. I've been wearing contacts for 40yrs & until just now knew nothing about how they can distort vision.
As always a really interesting video.
I think you'd instinctively know they distort vision, as it is what they're designed to do. lol. It's more a matter of how they distort vision beyond the limited parameters you would think they would do. Same with sunglasses in a way (and probably transition lenses too), you'd think they'd only 'distort' the amount of light coming in...but in the right circumstances, they'll totally block ALL light, especially from things like computer screens...
I wore contacts for decades, hard lenses then soft lenses.
I did have one type of soft lens that was less than optimal for night driving. Colors were off and depth perception to shadowed objects was pretty bad. Worse still, they seemed to cause excessive nighttime fatigue.
I had to use a specific type for road trips.
What type of contact lens did you use for road trips? Thank you very much in advance.
@@SignedOff402 The good ones are Air Optix Night & Day by Alcon (they used to be made by Ciba). They're also good for extended wear as long as you don't go a crazy long time.
They were the best I ever wore and great for driving, plus easy and convenient in general.
I've noticed depth perception changes with my IOL. IOL's are intraocular implants for cataract surgery.
I switch to my glasses during night driving, I couldn't find any good lenses in my prescribed strengths. I don't want to take any chances, so I wear my coca cola bottle glasses...😒
@@NickanM
Why cocacola bottle?
DUDE, I just have to say you have kept me sane the last few days. I have been cleaning out the house we're moving out of, and because I kept going "Oh crap, where did I set my phone," I wanted to have something playing on it so it wouldn't get lost. But I had my kids all over the place, it had to be something clean and non-violent, and I wanted a nice calming voice. YOU, man. You were perfect. Your voice is pleasant, consistent, even, your delivery isn't sensationalized or dramatic, your volume is totally even throughout, I can set your videos to auto play and just leave it going.
Thank you SO. MUCH.
I'm subscribed to a ton of aircrash investigation channels and I watch all of their videos. I can definitely say this is the most underrated channel ever. Can't describe what I feel everytime I hear "THIS, is the story of...."
❤️❤️❤️
You must be totally gay then because this guy sure is. The girly sounding voice and odd childlike expression speak volumes.
Ditto ❤😮
I am subscribed to a LOT of aviation channels, but I cant for the life of me understand how this channel doesnt have over a million subscribers. Maybe some people like the more "theatrical" type of channela, but I myself prefer this straightforward no frills delivery without long explanations of minor technical things that pretty much all of us avgeeks already know. Best of luck to you man!
Great audio level. Very much appreciated.
This pilot apparently did not disclose his eye condition and wore contacts to tests. If he disclosed, he would have been advised about the regulations regarding allowed and/or recommended eye sight correction devices like contact lenses or glasses. When in the know, he would have informed his optometrist about the rules.
Also the FAA is in the wrong, here. The FAA cannot expect optometrists to ask what profession their customers have.
I think the title of this video causes viewers to put too much emphasis on the pilot's contact lenses. I think this was a minor contribution to the crash. It seems to me that much larger contributions came from the poor visibility, the nonstandard runway light spacing, and the highly inaccurate vertical speed indicator info. (Also would've helped a lot if the first officer had called out the altitudes as the plane was approaching.) (Aren't they required to do that? I thought they were.)
They can't expect it but my doctors want to know the basics of my life in case they impinge on the treatment.
An optician always asks if you drive I don't drive I'm disabled and I've found your perception can be distorted even with glasses which firne is worsened with my brain not being right with bpd and possibly disprexia and I often have dissociation episodes.
On stairs with silver metal grip bars I'm careful cos I can misjudge steps yellow strips no issues.
I doubt idvd allowed a driving license and ifihave issues and don't drive cos of risk what about pilot id want my pilot if I did fly to have perfect vision .
I personally think pilots should have to have perfect vision, idbemire concerned about that than pilot mental health issues
Very interesting-- had no idea that certain contact lenses could adversly affect depth perception. I knew that some types of eyeglasses could alter depth perception, but I also knew that the brain quickly learns how to compensate.
A very weird set of circumstances, indeed. Glad all got out relatively unscathed! 😊
Nice job!!
Such a pleasure to sit back on a Saturday afternoon and listen to our treasured host recounting in his smooth, East Coast/mid Atlantic tones, the usual succinct, yet detailed and unfortunately harrowing account of some or another dramatic airborne tale unfurling before our very eyes.... for me, it truly is meditation! In this case, as having heard dozens if not hundreds of these, it once again reminded me if the oh so very human element in flying an aircraft. All the instruments in the world dont compensate for visual clues: you see the ground - you want to get on it. Moreover, even where the instruments ARE used, this, even more illustrates the difference between incident and disaster is often literally seconds. Exactly as described, I could feel the young first officer "doing it by the book " and the "resinous old salt" doing it "by eye" and that's because, quite simply, I believe to this day that instruments AREN'T as immediately reactive as the human sense so, whatever training is given, ultimately the senior commanders, still steeped in WW2 technology (which I think hasn't really changed much for 80 years....) go "by feel". And I'd have to say, thank Christ they do. Just like the Air France flight that crashed into woods at the end of a totally ill advised ultra low fly-by, the 5 second delay here from "the tech" caused this prang.... if the pilots had had perfect centisecond info relayed, this wouldn't have happened.....
I’m not sure what all the different contact lenses are banned by the FAA but I wore contacts that corrected for far and near vision. One contact corrects for distant vision, and the other for near vision. The contact that corrected for near vision wasn’t 20/20 but the other one was exceptional for distant vision. Aeromedical at my airline said they were okay with the FAA. Never had any problems with depth perception. Depth perception with both eyes is 18 feet and in the landing, you’re gonna always be that far above/far out from the runway anyways. This captain made up an excuse to get out of trouble.
If the video is an accurate reproduction, the report missed something pretty important.
The set of 4 lights to the left of the runway near the approach end is called a PAPI - precision approach path indicator. The number of red vs. white lights showing indicates to the pilot whether they are on the glideslope: 2 red + 2 white is "just right", more red = too low, more white = too high. Even if the ILS or radio altimeter could not be trusted for whatever reason, the pilot should have known he was below glideslope when he saw 3 or 4 red lights on the PAPI.
Do they necessarily have them at each and every airport in the world?
@@777Maranatha No, very small airports often will not have them. But an airport large enough to be served by an airline usually will, at least in the USA.
I don't know how many will see this but since it wasn't really explained - monovision lenses are where one contact lens corrects for distance vision and the other corrects for close up vision. Since the eyes aren't both optimized for distance viewing, this is where the effect on depth perception comes from.
Why wasn't the radio altimeter calling out altitudes? I had no idea about contact lens issues. When one of my happiest days comes, having a pilots license, I'll have to see if my contacts are the right kind. I'll bet very few GA pilots and possibly commercial pilots, know about the lens differences. That's a massively important thing to know! Thank you for bringing it to our attention!! Great video, as always!!
The wrong kind is monovision (one for distance and one for close up), prescribed for older and middle aged people.
There are multifocal contact lenses which allow for both close and long distance vision (close when looking downwards, so he would be able to focus on instruments), although they are far more expensive than monovision lenses, which are simply regular lenses where you put one lens for close vision in one eye, and a far vision in the other. Unlike monovision lenses, there is no problem with depth perception, but it doesn't really seem like this was the main cause of the accident anyway. At long distances depth perception is negligible anyway, and vibrations in the cabin/slight movements of the head would give about the same depth information.
The biggest issue in this accident seems to have been the lack of visibility and out of date/delayed rate of descent reported by the instruments, which pilots hadn't been made aware of.
That visual illusion is called the blackhole effect, where its hard to differentiate distances. As a pilot who wheres contact lenses, I believe you are highly inaccurate on blaming that its the contact lenses. This same thing would happen to any pilot even those without contacts. Plus the first officer wouldn’t immediately call a go around based off decent rate, he could have called for slight adjustments to the landing based off decent rate and altitude
Do you wear monovision lenses? I know the video didn't really explain it at all, but it's that specific type of prescription that may have caused the problem.
Decent or descent? That’s a very drastic difference, you know! Life or death.
I had cataract surgery done on both eyes, in 2013. The artificial lenses that go back into the capsule that sits behind the iris, are NOT measured to be exactly the same magnification in both eyes. That is to enable the binocular vision to remain intact. You can however request ones that are more conducive to short-range, medium-range, or long-range vision. I chose medium range. I still have to have "readers" for reading, and rx glasses to drive. Or get bi-focals.
Anyway, it makes me slightly dizzy to be outside, looking further away due to those different lenses in the eyes. It takes me a minute for my eyes AND brain to adjust to it.
I feel terrible for the passengers. Just imagine you've spent the entire flight dreading your impending arrival in the nightmarish hellhole that is LaGuardia, only to crash upon landing there.
"the medical examiner could not have known..."
What?
You look in their eyes. Contacts are quite obvious to see.
I worse lenses for my FAS medical exams and declared them. Even if I didn't the examiner could see fornthemsves if I could pass the eye exam with or without them and make a determination.
Given that Delta announced its saving millions because they got rid of most of their senior high paid staff and have a "juniorocity" staff now. This makes me nervous. Read the business insider article of this week.
I've been wearing glasses since the 7th grade (should have done so earlier, but hey, I just sat closer and closer to the front of the classroom). Anyway, I've never used contact lenses as I never could past the issue of sticking something in my eyes. And back then all we had were the hard lenses.
Great job with the video and the explanations.
I don't think it's good for a person to wear "corrective" lenses.
They force the eye muscles to remain stunted in how much they can actually see without the lenses
That's why longer periods without them can begin improving eyesight - the eye muscles have a chance to be more fully exercised.
What really causes vision to deteriorate like this in the first place... I've heard about alcohol consumption during pregnancy being a factor, but that's not always the case.
@@letsdiscussitoversometea8479 That depends on your personal eye situation. It isn't one size fits all as far as care is concerned.
@@letsdiscussitoversometea8479 A font of misinformation.
I know the feeling. I didn't get glasses until 6th grade but I needed them earlier. Didn't really notice it until I finally mentioned to somebody that I couldn't read the chalkboard. I've worn them ever since. I've tried contacts before but apparently my eyelids are tight because the first time I blink they leave. I've tried newer soft ones older hard ones pretty much all of them and once I got past the phobia of plating my finger on my eye I found I just couldn't keep them in so it's Zenni optical for me all the way
Can the tower order a go around?
Me starting a new Flight Sim flight at the gate: "Thisssss........... is the story of doomed Flight...."
I was taught even in my early C-150 days that the VSI is a lagging instrument. That was also repeated in my C172 & C182 IFR training. I can't imagine that I'd forget that in multi-engine, commercial, or airline pilot training.
I believe the abbreviation MV is referring to MONO VISION contact lenses rather than MONOCULAR VISION contact lenses. Monocular vision means vision out of one eye and unless you only have contact lenses in one eye they can't be monocular contact lenses. If you are using both eyes (usually a prerequisite for holding a pilot's license although there are exceptions) then regardless of whether you are using glasses, contact lenses or nothing you have STEREOSCOPIC not MONOCULAR vision.
Stereoscopic vision is what is used for short distance estimation whereas longer distances use angular size to estimate distance and MONO VISION contact lenses can alter your long distance perception in exactly the same way single focal length glasses meant for reading would.
The other main type of contact lenses are bifocal lenses that use two different optical corrections, one for close vision (reading instruments et cetra) and the other for viewing object at a distance (outside the cockpit). Bifocal contact lenses will also alter you long distance depth perception, but not as much as mono focal length lenses would. It's exactly the same as using mono focal glasses rather than bifocal glasses. The mono focal lenses only correct for reading and things that are close, if you use them to view objects at a distance they the view will be distorted and most likely out of focus and blurry as well.
I realize this is nit picking, but the difference between mono vision (meaning one focal length) and monocular vision (meaning viewing through one eye) is rather important in this situation.
In reality pilots really need TRI-FOCAL (yes they are a thing) glasses or contact lenses as they need to view objects that are close to them both below (instruments & center console) and above (overhead console) the normal long distance objects through the cockpit windows in the middle of their vision.
Dude, you're physic engine has the tips of the plane vibrating. INSANE DETAIL , love it!
Today, one of the items that we must check in the FAA medical aplicaron, is the one that questions "Do you wear near vision contact lenses," and if you check "yes" you are probably going to be denied your medical.
After all these years going through medical examinations, I have never met any pilot who wears NV contacts.
Good video as always MACI.
I think it's "MV", not NV. As in "monovision".
So one eye is fixed for far seeing, the other is fixed for near seeing. On normal casual usage, the brain will adapt. But one definitely loses a lot of distance estimation.
I think you are making too much out. Of. This.
@@jannamyers6792 Not really, the FAA are the ones that make everything a hassle. For instance, you must report every single visit to any medical doctor or facility/clinic in the previous three years, but not only you must report your visits, you must put their names, their addresses, telephone number, reason of your visit, the names of the prescribed medicine(s), and dosage. So it is a big deal and what's more, it is a way for big brother to snoop into your life.
I wear approved aviation contact lenses which enhance my vision. I can't believe this pilot's medical examiner did not even know he wore lenses. It should have been declared by the pilot in his questionnaire and his eyes checked by the doc. What else was the pilot unwilling to declare?
His drinking habit 😂
Did you listen to the end part where contact lenses weren’t banned but they since banned specific ones? Right near the end.
As an avid user of contact lenses, the dangers really don't surprise me. When in low light or low humidity (both applies here), vision can get blurry because the eyes tend to dry out faster under these conditions. Even worse, when we focus on one thing for a long time we tend to blink much less which massively contributes to eyes drying out. All of this can severely impact the vision.
Amen.
As a lens wearer of 36 years, I 100% agree.
I was wondering why driving seems off, now that I'm regularly wearing contact lenses. I'll talk to my optometrist about this, see if I can get a different pair prescribed next time
I'm blind now, but back in the day, I wore contact lenses. They were a constant source of pain. Yes, I can believe that contact lenses could cause enough distortion to cause a plane crash.
Wait how did you type this
@@232K7 Well, there's this bit of technology called a keyboard...
But what you really mean is, "How do you read the screen?", right?
I use a screen reader. The one I use on my computer is JAWS. Siri on the iPhone is the same idea.
That was interesting! Never thought contact lenses could be so important! Excellent video!! 👍✈✈👍
What about the PAPI lights (Precision Approach Path Indicator)? Surely that would have been a great clue to either pilot that the approach was way too low. Did they mention that in the report?
I have terrible vision and have been wearing glasses/contacts for most of my life. On top of it, my eyes are extremely imbalanced in their awfulness, with astigmatism in one eye but not the other. This would have been a nightmare scenario for me- I avoid driving at night, even streets I know well, because I can't trust my depth perception in low light.
Instead of abbreviating the type of contacts to MV, it would add to our understanding if the entire word were said each time. We lay people who wear them, at least among those I know, never use the description "MV" when referring to them.
Not to mention that he didn't explain what they are, or if he did I missed it.
I have mono vision cataract lenses and I never knew this. Thank you.
I'm at the age where I need corrective lenses to drive. When I got my prescription glasses, I noticed lots of distortion. While they help me read signs, I can actually see to drive better without them. I get sharp focus of what's in front of me with the glasses, but I'm finding out that there's much more to seeing, than just sharp focus of what's directly in front, and in order to get that, we sometimes sacrifice other qualities and end up with something worse, not better.
Contact lenses or spectacles do affect depth perception but it takes like 2-3 days to get used to it. For a pilot it may take a few landings but once he has got used to it, I dont think there would be any problem.
This is my favourite aviation accident channel I love it that you cover interesting cases like this... who knew contact lenses could cause something like this
What about his gay sounding voice though? And his use of odd expressions?
@@gregorylaco6193 personally I have no issues with how the videos are produced but if you do you don't have to watch them. That's the great thing about UA-cam you can turn off things you don't like
The PAPI lights were red. The pilot still had the instruments showing altitude and rate of descent.
Yup, and he still had glideslope indications to back himself up on too. And a qualified FO who could have taken control as he realized the imminent crash. Blaming this crash on contact lenses is a wild red herring.
What if they were on the correct glide slop until the last second? What if the PAPI lights only turned red after it was too late to do anything? As someone who also wasn't there, I'd be hesitant an asserting certainties...
@@XemawthEvo2 The captain's bars are 1000' down the runway. If the PAPI's went red at the last second, they would have hit tarmac not approach lights. They would have seen 4 red PAPI's starting at least 10 seconds prior to touchdown, more than enough time to correct or go around.
And radar altitude.
! With two pilots, why did neither check the glide slope needle? There was a note the ils was unusable below 200'. The deviation below glideslope was caused by the rejected takeoff ahead of them. Then they were flying an unstable approach. More than one dot below glideslope nearing dh (decision height) would have been reason for me to go around. The contact lens issue would not even been a problem if they had not deviated below glide path.
F.O. was monitoring instruments during the approach. They both became distracted with the departing aircraft's RTO...bad call by ATC clearing them for takeoff IMO...
@Reuben Morris I agree. I suppose ATC is under a lot of pressure to keep up the pace.
Hoping that more modern aircraft do a better job of monitoring and reporting on discrepancies between readings of conflicting altitude and speed data. Knowing your height above ground may not be where you expect would seem useful during a landing.
Great job on this one. Interesting insights.
Excellent work thank you! Love the survival stories!
What was that little plane that flew in from the right just as the plane was landing at the end of the video? It gave me a heart attack. Fantastic work, as always. Love your channel.
Ive got a complaint about your latest playlist. Ive watched all your “Aircraft Happy Endings” playlist and in not one of them did someone receive a happy ending.
This is great info i did not know about. Thanks!
AFAIK all VSI's lag behind the real vertical speed. A VSI measures the difference between the current static pressure and the static pressure 'some time ago', the latter is measured in an air chamber that loses or gains pressure slowly. As one of the measurements is from 'some time ago', your reading on the VSI will also be from 'some time ago' AKA, it lags behind by design. There's a reason it's called 'indicator' I learned this in my PPL(A) ground school already. Weird that the FO forgot about this. You can see this for yourself in a sim. Fly straight and level, then push the nose down seriously. You'll go down visibly, but the VSI will take some time to catch up with your descent speed. Then pull up, the VSI will lag behind again.
Unless it's an I-VSI you're correct.
I had no idea contact lenses could do that! I’ll have to make sure my future eye glasses prescriptions are okay…
Anywho, a little not: the VSI delay you noted is not unique to the MD-80. It’s a bug in every VSI in every airplane ever! This is something we learn at the private pilot level, so I am very surprised so many of the pilots apparently didn’t know about it.
This is just another example of the fact that aviation safety will always be evolving.
They were fortunate to aaquire the knowledge about contacts without the loss of life.Also the lag on the gauges.
Yes, I have a PPL, with aerobatic certification/endorsement. Generally speaking, contact lenses are much better than glasses, because I get a much better range of vision. But once I remember executing a series of aerobatic manoeuvres, when the Velcro strip holding my headset on came adrift during the initial loop (while inverted), unfortunately the microphone knocked out one of the lenses,, a little disturbing, however I managed to get the aeroplane straight & level - but luckily I found the contact lens and reinstalled it
That last moment was like, "Ho-lee-SHIT! Where in hell did that DA42 come from?!"
You should put up dates, names, destinations etc. as text.
It's a lot of data to keep track of. ..
A lot of CRM issues here!! The Captain should have stayed on the instruments until the FO said HE, the FO, had the runway in sight! And the the FO should then have monitored the ILS Glide Slope until they where over the runway. The tendency in a low approach is to 'duck under' when going visual after an Instrument low approach. Therefore it is incumbent upon the pilot monitoring to insure that they pay close attention to the aircraft's position relative to the correct course and glide path until touch down in the Touch Down Zone is assured. I can't even begin to count the number of low approaches over the years that I had to literally yell at the FO to - pull up - because when they went visual after I called the runway in sight they then tried to 'duck under'! Even without his contact lens issues the Captain was setting himself up for problems by going visual early! We talked a lot about this accident at my next recurrent ground school.
Great video as always!
I once had a contact fall out of my eye during a 25man raid in World of Warcraft. Everyone survived there too.
Interesting to know - I find my eyesight a lot more accurate with contacts but if your eyes get dry there's certainly problems there, and contact technology has hopefully improved since 96.
😚😚😚
I didn't know about monocular vision. Once again I have learned from your brilliant channel.
Not monocular vision - that would be vision with only one eye. Two things - monocular depth perception cues, which don't rely on the parallax from the two eyes - and monovision contact lens prescriptions.
@@ntdscherer thank you
A good example of a domino effect leading to the conclusion. Lessons learned.
I know a thing or two about contact lenses and flying........in 1989, I was a 727 captain beginning my transition to L-1011s when I was diagnosed as having keratoconus in one eye. Hard contacts were the only thing available at the time and they were not approved for flying and thus, ended my career as pilot.
Also, the vast majority of VSIs (Vertical Speed Indicators) have lag. In fact, I've only heard of instantaneous ones, never actually seen one. They are a secondary instrument, not to be used to determine descent rate during the final phase of an approach.
I wasn't there so I can't say for sure but it seems to me that if the nose was raised in preparation for a possible go-sround, then the approach became unstable and a go-around should have been initiated based on that alone. Again, I wasn't there so I'm guessing at best.
gray and cloudy days on a tree lined country road in the Appalachian Mts can definitely messes with my driving....
I was on that flight. We were just commenting on how foggy it was and grew concerned with our chances of getting to the runway safely.
The person seated next to me then began lightly cupping his hand over my genitals. The Mets spent way too much money on its payroll. Hi.
With all these mechanical, instrument, weather and pilot errors I see in all these incidences and accidents, I never want to fly again. Tho it may be the safest mode of transportation, I just can't believe that traveling by air will get me to my destination, I should stop my addiction to these very informative critiques. I guess they just terrify me like a bad dream. You do a great job but even you can't ease my concern when there are so many variables.
Nice Video, being too lazy to Google do you know what happened to the Pilots after the review. Seems that they were battling with some things out of their control/knowledge?
I've been loving the addition of flight sim footage. I know my opinion doesn't count for much, but wanted to chime in.
Thank you!
In the end clip where there was a plane going around and another one trying to land on the same runway as the player, are those other players or just bad AI?
@@NiHaoMike64 other players
sim?
A lot of little things added up. Noone overly at fault
I took a few flying lessons 40 years ago and I still remember that some instruments have lag, I can't believe that those passenger pilots didn't know it too.
The vertical speed indicator can be traditional which is a calibrated leak and thus have a lag. Or it can be an iVSI which is instantaneous. The plane I fly has an iVSI yet some pilots think it’s not.
On md80s that lag too far behind.actually 6 to 9 seconds , I'm sure they knew that as a professional and type rated pilot but the speed and rate of change of event in that a/c is a blink of an eye. also night landings are if much more courage.
@@imaPangolin I don't know what an iVSI is, but I guess it is some sort of radar VSI. I would be surprised if they hadn't come up with something better in 40 years.
@@raygiordano1045 not radar. Just instantaneous vertical speed indicator. I actually don’t know how it works! But it gives actual rate at the moment.
I was struck with the fact that there are no standards for spacing runway approach lights, and that they aren’t designed to radically deviate from the actual runway lights.
I like the information but why are so many of the vids so dark in color. It can be really hard to see whats going on.
No such thing as a 'small' issue in aviation, they can all lead to serious incidents like this or worse.
As someone with monocular vision I can see how this could impair people that are used to binocular vision.
at 3:13 you said they would have to go around as soon as they hit their minimum decent altitude. i think you got decision altitude and minimum decent altitude(mda) mixed up
Why do you need to rely on your contact lenses when you have a string of flight instruments and a FO to help to get your aircraft on the ground safely?
Sounds like other factors were in play.
I learned some time ago that vertical speed indicators lag by several seconds.
10:18 I'm sorry, but WHAT THE HELL are those two planes doing there!? :P
Like so many of these incidents - a series of seemingly unconnected things cause an accident. Luckily, the lessons learned from this accident flight were not written in blood.
Nice video ... well done.
I love listening to these when there’s time to pass…even while waiting at the gate to board my plane.
What do you think of his gay sounding voice?
@@gregorylaco6193 his voice is pretty hot
@@gregorylaco6193 it probably reminds you of your boyfriends voice
@@gregorylaco6193 This is your third post on this subject, troll.
@@gregorylaco6193 Honestly, I like your mother's voice. She didn't use it much last night. We didn't do much talking. Just saying.
I wanna know why those 2 other aircraft are buzzing the runway at the end. Did their pilots wear contacts too
WoW when did the FAA change their Eye test requirements? Currently the requirements is "Both eyes separately". A person with uncorrected monovision could never pass the test. Yes I wear glasses when flying but do not have to when driving.
"Uncorrected monovision"? Monovision is a type of contact lens prescription, not an eye condition.
@@ntdscherer Sorry, I have Monovision. Only one eye is nearsighted. I must wear glasses while flying but I do not have to wear them while driving.
I'm sorry i just had to say: OMG this episode starts with La Guardia? How bad can it be? (viewer from Switzerland)
Good Video ... Subscribed
so that's why the eye doctor needs to know what my job is lol
Great info....thx
Are our roads less safe because of people with contacts?
The first officer should’ve been admiring the scenery just like Sully
I had no idea about contact lenses. Do glasses have a similar issue?
Not all contact lenses, only a specific type of prescription called monovision, which I don't think they do with glasses.
Ok now 2:03 in and yet I had not heard they contacted the tower yet
All the medical requirements for vision are just like a car driving license. It states on the certificate: "must wear corrective lenses".
Would this accident have been averted if the pilot had worn glasses ?
Wait so they had a faulty instrument and nobody did anything?
Contacts? *chuckles* I'm in danger
Maybe someone know FAA rules. But I thought both eye have to be 20 20 for distance or better. If your wearing MV CL your not going to have that.
"Any ladning you can walk away from is a good landing"
He had red lights on the glide slope. The crew should have noticed they were low.
I wore soft contact lenses boxing both amateur pro. Lost one lenses the first time and after that I never lost a lenses.
Since when are patients required to disclose their profession to their optometrist?
So, in short, the crash wasn't caused by the contact lenses.
It was bad use of imperfect systems, in a low-visibility and cutting-it-close situation, which led to a destabilized final approach.
If the pilot had worn glasses instead, all the other factors would remain, and the crash still would have happened...
Maybe. Maybe not.
Great video.
Would someone who is legally blind in one eye ever be able to get a commercial pilot's license?
I hated when I had to fly on any MD_8N back in the 80s/90s.