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Air Law

1.5.7.3 Runway lighting

Runway lights are used when it is dark or when visibility is reduced. We can turn

on lights at unmanned airfields by pressing a number of times with the transmit

button on a specified frequency.

Runway edge lights are white

Runway end lights are red
Runway threshold lights are green

Taxiway edge lights are blue
Any taxiway center lights are green
1.5.7.4 Approach lights

To assist with visual approaches, some runways are equipped with:

- VASIS or

- PAPI Lights

The VASIS system consists of lights arranged along the

runway’s length.

The lights are constructed so that when viewed from a high

angle, they show white light. As you descend to a lower
altitude, the lights appear red. So, the goal is to be high enough

for the nearest light to appear white and low enough for the

furthest light to appear red. The landing will then occur

between these two lights.

VASIS stands for Visual Approach Slope Indicator System.

The PAPI system (Precision Path Indicator System)

consists of 4 lights placed side by side.

The color of the lights, red or white, works essentially the

same way as the VASIS system.

Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 86