Light Gun Signals: Steady Green
Ground & Air
Light Gun Signals: Steady Green
Air Only
Cleared to Land
Light Gun Signals: Steady Green
Ground Only
Cleared for Takeoff
Light Gun Signals: Flashing Green
Ground & Air
Light Gun Signals: Flashing Green
Ground Only
Cleared to taxi.
Light Gun Signals: Flashing Green
Air Only
Return for landing
(to be followed by a steady green signal)
Light Gun Signals: Flashing Red
Ground & Air
Light Gun Signals: Flashing Red
Ground Only
Taxi clear of the runway in use.
Light Gun Signals: Flashing Red
Air Only
Airport unsafe - do not land.
Light Gun Signals: Steady Red
Ground & Air
Light Gun Signals: Steady Red
Ground Only
Stop
Light Gun Signals: Steady Red
Air Only
Give way to other aircraft and continue circling
Light Gun Signals: Flashing White
Ground & Air
Light Gun Signals: Flashing White
Ground Only
Return to starting point on the airport.
Light Gun Signals: Flashing White
Air Only
Not Applicable
Light Gun Signals: Alternating Red and Green
Ground & Air
All Situations: Exercise extreme caution
(used for aircraft, vehicles, and personnel).
Light Gun Signals: Alternating Red and Green
Ground Only
Exercise extreme caution
(used for aircraft, vehicles, and personnel).
Light Gun Signals: Alternating Red and Green
Air Only
Exercise extreme caution
How do you acknowledge light gun signals?
Ground & Air
Rocking your wings in the air or moving the control surfaces on the ground.
5 W’s of radio communications
Line Up and Wait
Used by ATC when a takeoff clearance cannot be issued immediately due to traffic or other reasons. Taxi onto the runway and await takeoff clearance.
VFR Transponder Code
Squawk 1200
What are ATC Light Gun Signals for?
Used by ATC to give information to aircraft that are not contactable by radio.
Transponder Failure Procedure
Within transponder required airspace
Note (IFR): Report the malfunction to ATC as soon as practicable; although §91.187 names nav/approach/comm equipment, controllers expect immediate notification of surveillance failures and will issue instructions accordingly.