ACE - Airport Certified Employee Airfield Lighting and Maintenance Questions and Answers

Question 1

An airport maintenance technician performing a nightly check on a precision instrument runway observes that the runway centerline lights change from all white to alternating red and white.
What does this color change indicate to a pilot?

Accepted Answer

The aircraft has 3,000 feet of runway remaining.

Answer

The aircraft is in the touchdown zone.

Answer

The aircraft is approaching a taxiway intersection.

Answer

The runway is closed and should not be used for landing.

Question 2

A maintenance work order is generated for an unserviceable Precision Approach Path Indicator (PAPI) system on Runway 18. According to FAA Advisory Circular 150/5340-26C, which of the following is a critical maintenance task to ensure the PAPI provides accurate vertical guidance?

Accepted Answer

Verifying and adjusting the unit's aiming angle with a certified clinometer.

Answer

Replacing all lamps with a higher wattage for increased brightness.

Answer

Repainting the PAPI housing units to improve daytime visibility.

Answer

Issuing a NOTAM for the outage before beginning any work.

Question 3

Which of the following lighting systems is specifically designed to provide pilots with a rapid and positive identification of the approach end of a runway, especially when it's surrounded by other lights or lacks contrast with the terrain?

Accepted Answer

Runway End Identifier Lights (REIL)

Answer

Lead-In Lighting System (LDIN)

Answer

Touchdown Zone Lights (TDZL)

Answer

High Intensity Runway Lights (HIRL)

Question 4

While performing maintenance on a taxiway that intersects with a runway, a technician notes a set of alternately flashing yellow lights installed on each side of the taxiway at the runway holding position. What are these lights called and what is their primary purpose?

Accepted Answer

Runway Guard Lights; to enhance the conspicuity of the runway holding position.

Answer

Clearance Bar Lights; to indicate the taxiway is clear.

Answer

Stop Bar Lights; to signal when it is safe to cross the runway.

Answer

Taxiway Edge Lights; to define the lateral limits of the taxiway.

Question 5

An airport operations team discovers a complete outage of the Medium Intensity Runway Lights (MIRL) for Runway 9/27. After confirming the outage cannot be immediately repaired, what is the required administrative action?

Accepted Answer

Issue a Notice to Air Missions (NOTAM) detailing the outage.

Answer

Activate the pilot-controlled lighting system as a backup.

Answer

Restrict operations on the runway to daytime VFR conditions only.

Answer

Dispatch maintenance to replace the constant current regulator.

Question 6

According to FAA standards, what color are taxiway edge lights?

Accepted Answer

Blue

Answer

Green

Answer

White

Answer

Yellow