This was exactly what I needed ! The good thing with a SIM is that I have managed flying without this bit of information, but the right data entry increases the immersion.
Some military operators fly approaches using QFE instead of QNH so the altimeter reads 0ft at the threshold. Therefore they fly a MDH for non precision approaches and use the figures in brackets.
Hello. Nice video, but I would like to tell you that you are talking about DA as it is MDA, but they are different. MDA means Minimum Descent Altitude and it is used in NON-Precision Approaches, DA means Decision Altitude, and is used in precision approaches. The main difference is that you can not go lower than that MDA, on the other hand when using a DA, for example in an ILS, you take the decision to continue or go around at that altitude. Then radio altitude as you explained is used on CAT II and III approaches in general. Thank you and congratulation on the channel.
Incorrect, you can go lower than MDA with visual reference. Aviation is my profession, this also goes for Blackbox. To my knowledge he explained everything correctly.
Hello Arturo. That is exactly what I was refering to in the video when I was saying that some operators are using different procedures. Please be aware that I am using my company SOP and we are flying an ILS CAT 1 approach using MDA and not DH or MDH. Cheers.
@@Blackbox711 The issue is that people confuse DA (a baro reference) and DH (a radalt reference). During instrument training NPAs always use MDA, while Cat 1 ILS (usually in aircraft that doesn't have a radio altimeter) uses DA. So instrument-rated GA pilots who sims with the Airbus may end up entering DH for Cat 1, because they didn't know the difference, or thought "this is how it's done in the Airbus".
@@thomasjenkins8926 Hello Thomas. Aviation is also my profession. Is obvious that you can go lower when you have a visual reference. Thank you. The Minimum Descent Altitude (MDA) or Minimum Descent Height (MDH) is a specified altitude or height in a Non-Precision Approach or Circling Approach below which descent must not be made "without the required visual reference"
CAT I with minimum RVR runway visibility range of 550m. Below that you apply CAT II. Below 350m you are CAT IIIa. Below 200m you are CAT III b. Bwlow RVR 50m you are in CAT III c. CAT II and CAT III need autoland. But there are some airlines which allow CAT II to fly manually, which is normally not recommended. For the MDA and DH you also have to consider if you are in CAT C or CAT D for A320 family or 737 family and other large aircrafts. The CAT C and CAT D depend on the approach speed.
This is quite confusing. Reason: MDA is not a "decision"-altitude and therefore not the counterpart of the DH. The term "Minimum decent altitude" is a paradoxy in itself. It should be called MA: Minimum Altitude. The chart doesn't refer to the MDA either, but rather to the DA, the "decision altitude" as the counterpart of the "decision height".
After updating to the latest version of fslabs320, can you fly the FSLabs A320 Short Tutorial: Holding Pattern from 1 year ago? See if there is a huge change?
Hi BB. Thanks for such an informative video. You mentioned whilst looking at the chart something about "aircraft classes" e.g. class c. What does this mean? You mentioned heavy aircraft are class c. Where can I find info regarding this? Thank you!
The classification A to D are ICAO Aircraft Approach Categories. Those depend on the approach speeds, so indicated airspeed at the runway threshold (VAT) whilst in the normal landing configuration at the maximum certified landing mass. An A320 typically is C, while a 747 is D.
Very clear explanation! Thank you for the effort you put in! I have a question regarding CAT's. If for example, you would be landing on a CAVOK day, 10+km visibility no meteorological obstructions, you would be able to for example fly a CAT1 APP. How do you select what CAT you are flying, in sim I almost all the time get CAT3 on the display's even if I don't need it. Is it different from real world and what would the case be IRL? Thank you again!
During normal operations you always fly CAT 1 ils. On request you can fly CAT 2/3 but you need to advise atc about it beforehand so they have time to prepare ie turn on runway lights, increase traffic separation, many other things. Regarding FMA CAT 3, it's just an information that aircraft is preparing for autoland. You can always degrade to CAT 1 but switching off autopilot
Concerning the 233ft MDA for CAT 1, you need to put this value for example in a 737 classic, right? As i know the MDA/DH panel in a 737 classic accepts only values from 0 to 999ft in the box. I mean three digit value.
On 737 cl (and 757/767), the Baro minimum (MDA or DA) are puted as the red marker on the round altimeter, and there is no auto call-out for that, PM is in charge to call that out. While there are auto call-out for radio minimum, you must not use it when charts only shows MDA or DA(DH) as the terrain is not flat as in the video. So you have to put it to -20 for NPA or CATI, to inhibit the auto-call. Sadly there is no PM in most sims (I only know FS2Crew for LD767 could make that call based on red marker). so I'd stil normally put DH in radio minimum on my flight with Feelthere 737CL and CS757, bettere than nothing.
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This was exactly what I needed ! The good thing with a SIM is that I have managed flying without this bit of information, but the right data entry increases the immersion.
Happy my video helped. Happy Landings
Whenever you post a new video, i hit like before I even start playing the video
I learn a LOT from your a320 tutorials and it makes the 320 look so easy for me to fly thank you!
I love ALL your videos, BB. They are full of great info., and we all benefit from your wonderful efforts. Thank you so much.
You were flying to a windy place😄 Thanks for the Tutorial always great
Thank you 🥳👍
Some military operators fly approaches using QFE instead of QNH so the altimeter reads 0ft at the threshold. Therefore they fly a MDH for non precision approaches and use the figures in brackets.
We have fly all over the Russia until recently by this method,but now QNH is everywhere
Interesting to hear that! Thank you very much.
What I needed, you are blues man! Genius.
Thank you very much
Hello.
Nice video, but I would like to tell you that you are talking about DA as it is MDA, but they are different. MDA means Minimum Descent Altitude and it is used in NON-Precision Approaches, DA means Decision Altitude, and is used in precision approaches. The main difference is that you can not go lower than that MDA, on the other hand when using a DA, for example in an ILS, you take the decision to continue or go around at that altitude. Then radio altitude as you explained is used on CAT II and III approaches in general. Thank you and congratulation on the channel.
Incorrect, you can go lower than MDA with visual reference. Aviation is my profession, this also goes for Blackbox. To my knowledge he explained everything correctly.
Hello Arturo. That is exactly what I was refering to in the video when I was saying that some operators are using different procedures. Please be aware that I am using my company SOP and we are flying an ILS CAT 1 approach using MDA and not DH or MDH. Cheers.
@@Blackbox711 The issue is that people confuse DA (a baro reference) and DH (a radalt reference). During instrument training NPAs always use MDA, while Cat 1 ILS (usually in aircraft that doesn't have a radio altimeter) uses DA. So instrument-rated GA pilots who sims with the Airbus may end up entering DH for Cat 1, because they didn't know the difference, or thought "this is how it's done in the Airbus".
@@thomasjenkins8926
Hello Thomas.
Aviation is also my profession. Is obvious that you can go lower when you have a visual reference. Thank you.
The Minimum Descent Altitude (MDA) or Minimum Descent Height (MDH) is a specified altitude or height in a Non-Precision Approach or Circling Approach below which descent must not be made "without the required visual reference"
Now explain the differences in CAT1, CAT2, CAT3 approaches 😬
CAT I with minimum RVR runway visibility range of 550m.
Below that you apply CAT II.
Below 350m you are CAT IIIa.
Below 200m you are CAT III b.
Bwlow RVR 50m you are in CAT III c.
CAT II and CAT III need autoland.
But there are some airlines which allow CAT II to fly manually, which is normally not recommended.
For the MDA and DH you also have to consider if you are in CAT C or CAT D for A320 family or 737 family and other large aircrafts.
The CAT C and CAT D depend on the approach speed.
you forgot the "Please"
@@ahmedsmart1120 Thanks
This is quite confusing. Reason: MDA is not a "decision"-altitude and therefore not the counterpart of the DH.
The term "Minimum decent altitude" is a paradoxy in itself. It should be called MA: Minimum Altitude.
The chart doesn't refer to the MDA either, but rather to the DA, the "decision altitude" as the counterpart of the
"decision height".
Thanks 🙏
How long before the landing must the part BARO/RADIO must be decided?
That decision is made by the visibility at the airport. Below 550 meters runway visibility CAT 2 or 3 will be in use. Then Radio/DH is used.
Whats about a RNP - LNAV/VNAV or a RNP - LPV approach, that are precision approaches, do we also use the MDA, as you didn't said in the video?
No, those are all Non-Precision approaches. Hence you use the MDA/Baro
Happy New Year BB!
Thank you 🙏 Happy New Year to you too.
Finally! Thnx!
After updating to the latest version of fslabs320, can you fly the FSLabs A320 Short Tutorial: Holding Pattern from 1 year ago? See if there is a huge change?
Hi BB. Thanks for such an informative video. You mentioned whilst looking at the chart something about "aircraft classes" e.g. class c. What does this mean? You mentioned heavy aircraft are class c. Where can I find info regarding this? Thank you!
The classification A to D are ICAO Aircraft Approach Categories. Those depend on the approach speeds, so indicated airspeed at the runway threshold (VAT) whilst in the normal landing configuration at the maximum certified landing mass. An A320 typically is C, while a 747 is D.
nice video,i have a question what is the charts called?
Thank you. I am using Navigraph charts.
@@Blackbox711 ok thanks
good to see you captain
Very clear explanation! Thank you for the effort you put in! I have a question regarding CAT's. If for example, you would be landing on a CAVOK day, 10+km visibility no meteorological obstructions, you would be able to for example fly a CAT1 APP. How do you select what CAT you are flying, in sim I almost all the time get CAT3 on the display's even if I don't need it. Is it different from real world and what would the case be IRL? Thank you again!
During normal operations you always fly CAT 1 ils. On request you can fly CAT 2/3 but you need to advise atc about it beforehand so they have time to prepare ie turn on runway lights, increase traffic separation, many other things.
Regarding FMA CAT 3, it's just an information that aircraft is preparing for autoland. You can always degrade to CAT 1 but switching off autopilot
@@maestro7332 Thank you very much for clarification, really answered all my questions! Milego dnia!
@@maestro7332 good explanation. Thank you.
well done I appreciate your explanation 👍✈️libyan pilot
Thank you very much. I wish you always happy landings
Concerning the 233ft MDA for CAT 1, you need to put this value for example in a 737 classic, right?
As i know the MDA/DH panel in a 737 classic accepts only values from 0 to 999ft in the box. I mean three digit value.
Isn’t the minimum set via the rotary button on the glareshield in the 737?
On 737 cl (and 757/767), the Baro minimum (MDA or DA) are puted as the red marker on the round altimeter, and there is no auto call-out for that, PM is in charge to call that out.
While there are auto call-out for radio minimum, you must not use it when charts only shows MDA or DA(DH) as the terrain is not flat as in the video. So you have to put it to -20 for NPA or CATI, to inhibit the auto-call.
Sadly there is no PM in most sims (I only know FS2Crew for LD767 could make that call based on red marker). so I'd stil normally put DH in radio minimum on my flight with Feelthere 737CL and CS757, bettere than nothing.