Air traffic control light signals are used to control traffic with which
radio contact cannot be made. To help myself remember the various signals used
by ATC, I've developed this test/study guide. If you would like to give it a try
you may do so by clicking the Start Test button.
Have Fun!
As you know, two-way radio communication is required before you can enter
class D airspace. If you think your radio has failed, you can still land at a
tower controlled airport by following the lost-communication procedure. Anytime
you believe that your radio is inop, set your transponder to 7600. This will
alert ATC of your plight.
Remain outside class D airspace until you can determine the direction and
flow of the traffic. Then, if you believe that only your receiver is inop,
advise the tower of your aircraft type, position, altitude and your intention to
land. then join the pattern and stay in visual contact with the tower. Obviously
if both transmitter and receiver are inop, you won't be able to tell the tower
of your intent. In that case, just stay outside class D airspace until you can
determine the direction and flow of traffic, the join the pattern and maintain
visual contact with the tower.
Upon receiving light signals, you should acknowledge then by either rocking
your wings if in the air during the day, moving your elevators if on the ground
during the day, or if it's night, flashing your landing light or navigation
lights.
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Last updated: November 18, 2003.