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Questions tagged [airport-lighting]

Use on questions about how airport lighting is used, installed or operated. Airport lighting includes runway and taxiway lights, approach lighting, airport beacons, etc.

24
votes
2answers
59k views

What's the functional difference between PAPI and VASI?

PAPI and VASI seem to be very similar in the the information they provide - i.e. are you on the glide slope or off it. Is there a functional difference between the two? If there is a difference, and ...
9
votes
2answers
6k views

What determines the positioning of PAPI lights from the runway threshold?

Why are PAPI lights installed 300m from the threshold? What are the conditions that define the position of the PAPI lights from threshold?
11
votes
2answers
2k views

How to decide on which side of the runway the approach path indicator (VASI, PAPI) are placed?

This answer provides pictures and drawing of implementation of both PAPI and VASI. In all pictures I found, I cannot figure if there is a rule to put those lights on the right, on the left, or on both ...
2
votes
1answer
422 views

Does runway center lighting increase runway lifetime?

I wonder if the centerline lighting helps add a few more years to the runway, especially with heavy aircraft like A350/A380, in addition of being helpful for landing and takeoff? My question is based ...
2
votes
3answers
241 views

How are runway lights constructed?

How are runway lights constructed so that they are not damaged by aircraft wheels, and can continue to function safely, to demanding specifications, under a wide variety of environmental conditions?