Radio Out- Light Gun Signals Used By ATC

Do you know the light gun signals that are used in case of a radio failure or if your aircraft is not equipped with a radio? Air Traffic Control (ATC) will use a signal lamp to give you instructions and clearance limits. The light gun has a focused bright beam and is capable of emitting three different colors: red, white and green. You have to look closely but they are visible from a surprising distance away. These colors may be flashed or steady, and have different meanings to aircraft depending if you are in flight or on the ground. Pilots can acknowledge the instructions by “rocking” their wings, moving the ailerons if on the ground, or by flashing their landing or navigation lights during hours of darkness. Here’s a quick refresher to the signals used:

Flashing Green On The Ground:Cleared to taxi
Cleared to taxi
Flashing Green In The Air:Cleared to approach or return to land
Cleared to approach airport, or return to land.
Steady Green On The Ground:Cleared for takeoff
Cleared for takeoff.
Steady Green In The Air:Cleared to land
Cleared to land.
Steady Red On The Ground:Stop
Stop
Steady Red In The Air:Give way to aircraft, continue circling
Continue to circle, give way to other aircraft.
Flashing Red On The Ground:Immediately taxi clear of runway in use
Immediately taxi clear of runway in use.
Flashing Red In The Air:Airport unsafe, do not land
Airport unsafe, do not land.
Alternating Red/Green On The Ground:Exercise extreme caution
Exercise extreme caution.
Alternating Red/Green In The Air:Exercise extreme caution
Exercise extreme caution.
Flashing White On The Ground:Return to starting point.
Return to starting point.
There is no Flashing White used In The Air.