Final answer:
ATC Light Gun Signals are visual communication cues from air traffic control to pilots. In flight, they indicate clearances and warnings such as clearance to land, instructions to give way, and airport conditions.
Step-by-step explanation:
ATC Light Gun Signals in Flight
The ATC Light Gun Signals are a series of visual cues used by air traffic controllers to communicate with pilots when radio communication is not available. Here is a list of the standard light gun signals and their meanings while in flight:
- Steady Green: Cleared to land.
- Flashing Green: Cleared to return for landing (to be followed by steady green when cleared to land).
- Steady Red: Give way to other aircraft and continue circling.
- Flashing Red: Airport unsafe—do not land.
- Flashing White: Return to starting point on airport.
- Alternating Red and Green: Exercise extreme caution.
Pilots should acknowledge these signals by rocking their wings during the day or by blinking their landing or navigation lights at night.