Airfield Lighting and Maintenance Flashcards

Approach Lighting Systems (ALS) are primarily designed to assist pilots with which phase of flight?

Answer: Transition from instrument to visual flight during landing

ALS helps pilots transition from instrument references to visual references during the final approach.

What color are runway end lights as seen by an aircraft on approach?

Answer: Red

Runway end lights show red toward approaching aircraft, signaling the end of the available runway.

The Visual Approach Slope Indicator (VASI) shows a pilot they are on the correct glide path when the lights appear as:

Answer: Red over white (near bar red, far bar white)

On glidepath, the near bar appears red and the far bar appears white — remembered as 'red over white, you're alright.'

Which of the following best describes the MALSR approach lighting system?

Answer: Medium intensity ALS with runway alignment indicator lights

MALSR stands for Medium intensity Approach Lighting System with Runway alignment indicator lights.

Touchdown Zone Lights (TDZL) are located in what area of the runway?

Answer: First 3,000 feet of the runway from the threshold

TDZLs are installed in the first 3,000 feet of the runway from the threshold to aid pilots during touchdown.

A PAPI system using four light units shows two red and two white lights. This indicates the aircraft is:

Answer: On the correct glidepath

Two red and two white lights on a PAPI indicate the aircraft is on the correct approach slope.

Which runway marking or lighting element identifies a runway with a displaced threshold?

Answer: Yellow chevrons and white arrows pointing toward the threshold

Displaced thresholds are marked with yellow chevrons in the unusable area and white arrows directing aircraft toward the actual threshold.