← All explained questions · Supplemental · III — Airport & Seaplane Base Operations

An airport beacon flashing at night with WHITE-YELLOW alternating identifies the airport as

Choices

a land airport.
Land airports are white-green.
✓ a water/seaplane base.correct
Airport beacon code: WHITE-GREEN = lighted land airport. WHITE-YELLOW = lighted water/seaplane base. WHITE-WHITE-GREEN = military airport. WHITE-WHITE = heliport with white-white-green also possible. Memorize the colors: white pairs with G/Y/W to encode the airport type.
a heliport.
Heliports use white-white or white-green-yellow.
a military airport.
Military beacons are white-white-green.

Why

Airport beacon code: WHITE-GREEN = lighted land airport. WHITE-YELLOW = lighted water/seaplane base. WHITE-WHITE-GREEN = military airport. WHITE-WHITE = heliport with white-white-green also possible. Memorize the colors: white pairs with G/Y/W to encode the airport type.

FAA source: AIM 2-1-9browse the reference library →

Covered in Supplemental · III — Airport & Seaplane Base Operations — study the lessons free, then practice with grading and mastery tracking.

Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.