Airfield Lighting & Signaling Flashcards
7 cards from real CFC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Airfield Lighting & Signaling flashcards as text
The rotating beacon at a civil land airport flashes which color combination?
Answer: Green and white
Civil land airports use a rotating beacon that alternates between green and white flashes, distinguishing them from military and water airports.
A military airport rotating beacon can be distinguished from a civil airport beacon by:
Answer: Two white flashes alternating with one green flash
Military airports use a beacon that produces two white flashes followed by one green flash, distinguishing them from civil airports which produce a single white flash with each green.
A heliport rotating beacon displays which colors?
Answer: Green, yellow, and white
Heliport beacons flash green, yellow, and white in sequence, making them distinct from airport beacons and easily identifiable from the air.
During daytime hours, operation of an airport's rotating beacon typically indicates:
Answer: Weather at the airport is below basic VFR minimums
In the contiguous US, a rotating beacon operating during daylight hours indicates that ground visibility is less than 3 miles and/or the ceiling is below 1,000 feet (below basic VFR).
A large lighted yellow 'X' displayed on a runway surface or signaled by a light gun means:
Answer: Runway temporarily closed — do not use
A yellow X on a runway surface, or a flashing yellow X displayed from a light gun, indicates that the runway or taxiway is closed and should not be used.
High-intensity white obstruction lights on structures above 500 feet AGL are:
Answer: Used day and night, with intensity reduced at night
High-intensity white obstruction lights operate at full intensity during daylight and twilight, but are required to be dimmed at night to prevent glare and disorientation for pilots.
Approach lighting systems (ALS) serve which primary function for an arriving aircraft?
Answer: Provide a visual transition from instrument to visual flight at the decision height
ALS provides pilots with a visual reference corridor that guides the transition from instrument meteorological conditions to visual flight, enabling the pilot to identify the runway environment at or before decision height.