← All explained questions · Communications and Air Traffic Control
A flashing red light gun signal to an aircraft in flight means what?
Choices
Cleared to land
Cleared to land is a steady green.
✓ Airport unsafe, do not landcorrect
A flashing red in flight means the airport is unsafe, do not land.
Return to starting point
Return to starting point is a flashing white on the ground.
Exercise extreme caution
Extreme caution is alternating red and green.
Why
A flashing red light gun signal to an aircraft in flight means the airport is unsafe — do not land.
FAA source: AIM 4-3-13browse the reference library →
This is taught in Light Gun Signals and Lost Communication — 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.