← All explained questions · Supplemental · III — Airport & Seaplane Base Operations
An airport rotating beacon (alternating WHITE-GREEN flash) operating during DAYTIME indicates
Choices
the airport is closed.
Daytime beacon doesn't indicate closure.
✓ the field is currently below VFR weather minima.correct
ceiling less than 1,000 ft AGL or visibility less than 3 SM). IFR flight required to land. Airport beacon at night: signals airport location. Beacon operating in DAYTIME at certain types of airports = field is below basic VFR weather minimums (ceiling <1,000 ft and/or visibility <3 SM). White-green = land airport (lighted). White-yellow = water airport. White-white-green = military. Beacons may be turned on by tower or by pilot via NOTAM/CTAF.
a tower controller is on duty.
Tower-on-duty isn't beacon-related.
fuel is available.
Fuel available = different signal (ticks on chart).
Why
ceiling less than 1,000 ft AGL or visibility less than 3 SM). IFR flight required to land. Airport beacon at night: signals airport location. Beacon operating in DAYTIME at certain types of airports = field is below basic VFR weather minimums (ceiling <1,000 ft and/or visibility <3 SM). White-green = land airport (lighted). White-yellow = water airport. White-white-green = military. Beacons may be turned on by tower or by pilot via NOTAM/CTAF.
FAA source: AIM 2-1-9; AIM 2-1-9 Airport Beaconsbrowse the reference library →
Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.