Strange Airport lights – PAPI’s

Strange Airport lights – PAPI’s


hi guys very welcome to mentor and another video podcast I hope you’re doing absolutely fantastic out there today on the podcast guys we’re going to be talking about populates what are they how do they work and how are we not supposed to use them stay tuned right guys so populate this is something that I’m getting quite a lot of questions about populates you might have seen them if you’ve been out taxing around sitting as a passenger and you’ve looked out next to the runway you would have seen that next to the touchdown zone markings those big white lines you would have seen four yellow boxes sometimes they are on each side of the runway so it’s four on the left and four on the right and sometimes it’s only a set of four on one side of the runway and now what they are and they are essentially a visual glide slope indicator okay they have bulbs lights inside of them and they are coordinated to show a specific color at a specific angle okay so if you go low down if you look at one of those lights from a low angle they will be red and then as you rise up from a higher angle they will become white those four lights they have there been set all of them have been set to different angles so that if you are coming in with an aircraft on a three degrees glide slope for example it can be set to different angles but normally it’s a three degrees glide slope you will see two white lights and two red lights all right that is an indication for us a visual indication that you are following a correct glide slope down towards the touchdown marking all right they are normally coordinated with the instrument landing system signal sometimes they’re a little bit uncoordinated for different reasons but in most cases they coordinate perfectly with the ILS and the reason we have them is because as we are descending down through the clouds following the instrument landing signal all right we are focusing completely on the instruments however s we are getting out from the clouds into visual conditions we have to transition from watching only the instrument to looking through the glare shield of the aircraft out and then judging depending what we see whether or not we are in a good position to land now the way that the populace works is that if you or like I said sitting perfectly where you’re supposed to be you have two white two reds if you’re starting to go high on the glide slope it will then turn into three whites and subsequently four whites okay for whites not good three whites do something same thing is after if you’re starting to go low on a glide slope you will get three reds and subsequently four ads which is really not good okay now so that’s how it works so as we’re sitting there coming down maybe at the thousand feet we’re starting to get out of clouds with we’re going out visual what we’re trying to do then as pilots is that no matter if you’re flying a Cessna or a Boeing 737 you look through the windshield and you find a spot which normally tends to be one marking ahead or the touchdown point okay and you’d want to be able to see that point not moving either up or down in the window then you come down you’re maintaining a constant descent angle all right we’re done using the pop is to see that we are actually in the correct spot so we’re looking at we see the touchdown so marking looking at the pop list there should be two White’s two Reds and then we’re also transitioning checking the instrument checking that speed is correct at the pitch is correct and outside again right so we’re going kind of outside inside outside now here is where I come to what people should not use the purpose for now you have to understand that the way that the purpose of built is that they form a kind of cone like this right where if you’re far out it means that since the cone is widening you’re going to need quite a lot of change in altitude in order to go from two White’s two Reds to three whites and four whites but as you’re getting closer inside of this cone those changes are going to be smaller and smaller and smaller and it’s actually exactly the same with the ILS signal so what that means is that if you’re getting down to maybe 300 feet 200 feet you cannot focus that much on the poppies because the differences in altitude for you for them to start to tell you that you’re high or low is going to be so small than it in reality it doesn’t really matter so what you should be looking at as you’re getting down below 200 feet is the touchdown zone all right if the touchdown zone looks good if that point that you decided on earlier it’s still in the correct place then you can continue even if the purpose is telling you that you’re on three whites or three Reds all right so a problem that we see in a mistake that a lot of people do especially coming out of the simulator and onto line training is that they’re over emphasizing the Papas which means they’re coming in to 200 feet the line it perfectly stabilized just what they’re supposed to be suddenly they see three Reds and they pull back and I go high and then destabilize the approach ok this is a problem that is actually quite big and what we’re trying to tell you and what I’m trying to tell you with this video is that when you’re in your training you use the Papas to get yourself into a position where you can judge if you’re going to landing where you’re supposed to based on touchdown so then if the touchdown zone is telling you that you’re doing ok you can kind of disregard the Papas during the last couple of hundred feet this is really important guys and it’s gonna save you a lot of sectors online training if you understand this now good that’s basically want to have about Papi’s guys if you have more questions about Papa stand send them in below as always wherever you are have a fantastic day and I’ll see you next time bye bye okay Stanley let’s have a look and see how many coffee holders who actually have inside of the cup up here so we start over here on the right hand side one two three for than behind the year five and for the final run inside of the jumpsuit six so that makes it six cockpit holders inside of the 77 800


100 thoughts on “Strange Airport lights – PAPI’s

  1. I love your channel Mentour ❤️ By the way, we’re on final approach for 100,000 subscribers! Could you also make another video about all other airport lights like taxiway or ramp lights and such?

  2. Here's part of a rhyme that I heard from Sporty's Pilot Training videos: "All red, you might be dead" I forgot the rest of it.

  3. I might put this to use in X-plane.. last flight i did was into LOWI lovely 460fpm touchdown lol. Ahh heres a question happens at Innsbruck at night with regards to approach.. Surely there is no visual for runway 8 at night but what happens when the winds are blowing from the east. I had a tailwind of about 7kts on a dry runway, I figured that would be alright for a 737 but what if the winds are stronger?. been wondering about that for ages.

  4. Hey Captain!
    It's sad to see the last video uploaded 2 months ago.
    End of February came and went. Hope you get back with your wings on and seat belts fastened soon.
    Cheers.
    -The one who got to sit in AirBerlin only once 🙁

  5. My FI wouldn't let me go solo until I hit the touchdown marker on every supervised landing. He gave me the exact same advice about the PAPIs. Nice video!

  6. This is an excellent video and thank you for doing these videos. I noticed the lights are in a row. Have you also dealt with two rows of lights like "red on white" approach lights? I also heard of these lights called VASI lights. Are there any differences between PAPI and VASI lights?

  7. Mentour pilot do you mean that we can ignore the PAPI lights if we are hundreds feet far from the runway and we already decided the aiming point ?

  8. Ha! I just saw the vid last night with the question and gave my answer, I was right in there somewhere.

  9. Over the years as a passenger I'd often flown, before security crackdowns, as a pilot's guest in the cockpit on commercial airlines. The issue that has always confused me has been the apparent lack of forward visibility from the cockpit. The instrument binnacle is so high that one wonders just how much can be seen; particularly when landing.

  10. How is it decided what type of planes a pilot flies? Does a pilot know how to fly all models of aircraft or only one or two different models? For example can a pilot fly a 727 and 737 but not a 747?

  11. All modern transport aircraft provide two REMOVABLE coffee holders. One occupies the left seat and is called "Captain". The second coffee holder occupies the right seat and is called "Hey, you!" <grin>

  12. Q.1: Is there a "minimum set" of landing aids your company requires to land at an airport?
    Q.2: Have you done a video on the most significant landing aids? (e.g. PAPI vs ILS, etc) and how you use the available aids (e.g. when transitioning from GPS to ILS to PAPI)

  13. Red over red, you'll end up dead. White over white, you'll fly all night. Red over white, you'll be alright.

  14. My Uncle was a Bush-pilot in Alaska, He always said on landings " White-White – You'll be up all night" , "Red-over-white – We're Just right", "RED-RED – You're DEAD" … a little uncooth but it helped me remember, and i was only 10yrs old the last time i flew with him… 🙂

  15. I was told a long time ago they were called vasi lights. Red you're dead, white you're alright, and green you can't be seen.

  16. @Mentour Pilot… Have you done or will you do a video on the lines on runway and taxiway and what they mean or stand for?

  17. The error you describe sounds similar to "chasing the ball" if you're doing a dynamic carrier landing (as opposed to a vertical one), you start oscillating across the glideslope and risk a ramp strike or wasting your landing gear some point after the arresting cables.

  18. Wow, I never thought, these lights have so many meaning. But do these lights help on a sunny day i.e. can be seen?

  19. I have a recording of a comedian talk about them and said that if you see green you are very low because it is shining through the grass! LOL!

  20. Sir I am fire fighter i want to know about fire instruments inside aeroplane so sir made a video of extinguishers inside aeroplane or more things about fire

  21. Thanks. As I try to make runways in Minecraft as realistic as possible, I usually try to include the PAPI system. It's not at all easy, but it works. 🙂

  22. Basically, the PAPI system is 4 pair of polarized lights set at an certain landing angle relative to the runway. Each pair has a red and white light. Depending on your viewing angle from the cockpit you will see certain number of the polarized light illuminated. As a projected light source, PAPI behave as a point source that radiates the light beams in a conical pattern. At the maximum distance from the PAPI the light beams are at their greatest separation whereas at the minimum distance the light beams are overlapping. As a pilot flies into the PAPI conical light pattern and the separation distance between the plane and PAPI begins to reduce rapidly, the plane’s slight vertical deviation movements will allow the pilot to see many more beams of red or white light. Mentor advises pilot not to make further adjustment when the plane is near 200-300 feet above ground as the separation distance between plane and PAPI has been reduced below the operational limits.

  23. Is it normal like in 2:31 to make such big movements on the yoke during final approach? Also, once the plane touches down, is there any mechanical help so it doesn´t offset from the center line until it stops, or is the pilot who is constantly steering ?

  24. I remember there being two rows of VASI lights. If both rows showed green you were in the glide slope. If the far row turned red you were to high and if the near row turned red you were to low. When and why did they change to PAPI? I have asked other pilots on YouTube and have gotten no response. I found the VASI lights as workable as the PAPI.

  25. what is APAPI?is it still in use,i am in ground schooling for CPL ..a bit confusion between PAPI and APAPI lights.

  26. I remember the old joke “I they are glowing green you are extremely low because now the light is filtering through the grass!”

  27. I thought of the airports in my area use VASI lights. Touching on the differences could be an interesting video.

  28. I thought Standing In The Middle Of The Runaway you get road Killed in this case jet killed or it's just a green screen effect system 🤔🙄

  29. thanks to you I can fly better in x plain 11 simulator that's awesome ATC still tells me I'm squawk 4500 whatever that means

  30. Interesting On my own home sim (Microsoft-X (an old one from 2006 the last year Bill Gates decided to close the sims from further purchase) I have noticed that just crossing the threshold and ready to touch down, they are all red! I simply ignore this. I KNOW just where I am over the runway, and don't need POPI any longer and I make perfect landings. Further, this MIGHT be a bug in this Microsoft programme If I follow the PAPI I am too steep (above 3 degrees) but I usually (of course when there are no obstacles in front of me tend to come in at maybe two and a half degrees, Some might say that is too low, but using my very 'hard to stall' Raytheon-Beechcraft B-350 King Air when I do come in 'too low' actually I wind up making the smoothest landings imaginable! No bounsie-bounse, or 'firm' touchdowns. Smooth transition from wing to tyre……….BTW, as I am also into railways, I have a railway sim as well )not only driving genuine rolling stock, be it steam, diesel or most important and most majority of my time, electric, I can also do my own layouts 'routes Yes, complete with the overhead infrastructure (from RZD in Russia).'……… I have many airports and I found out a trick on how to install PAPI lights at both ends of the runways. Being predominantly a rail sim, the airport 'assets or objects are rather limited, but good enough to use for a fairly realistic airport. It is from Hellensvale,  QLD in eastern Australia, the company now known as N3V Games. Their Auron Trainz is their railway division as they (N3V) also has their own flight sim as well. On the Trainz they have one A-319 in Air New Zealand markings and if done right one can simulate a take off or landing. It is a bit cricky but still works.

  31. Regarding the coffee holders. I work in electronic environments and no liquids of any type are allowed due to possible spills. Surprised they allow these in a cockpit.

  32. As an old Air Force pilot, we used to have a saying, "Any landing you can walk away from is a good landing, any landing you can walk away from and use the aeroplane again is a great landing" great video.

  33. I didn't hear (unless I missed it) you say what 'PAPI' stands for – 'Precision Approach Path Indicator'. One of the simplest designs ever – one bulb in each box, 2 lenses – red and white, showing the colour depending upon the angle. You said there were "bulbs" in each, suggesting a red bulb and white bulb – not so.

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