Piper Navajo PA-31 Service Manual page 900

PIPER NAVAJO SERVICE MANUAL
k.
Reconnect the pilot's remote switch harness and the antenna coax cable to the transmitter.
1. Set the ON/ARM/OFF switch to the ARM position.
m. Reinstall the access plate previously removed.
NOTE
It may be advisable to test the unit operation before installing the
access panel. (See Paragraph 12-5.)
NOTE
Inspect the external whip antenna for any damage. Avoid bending
the whip. Any sharply bent or kinked whip should be replaced.
Antenna damage may cause structural failure of whip in flight.
12-12. PILOTS REMOTE SWITCH. A pilot's remote switch, located on the left instrument panel, is
provided to allow the transmitter to be controlled from inside the cabin. The pilot's remote switch is
placarded ON, AUTO/ARM and OFF/RESET. The switch is normally left in the AUTO/ARM position. To
turn the transmitter off, move the switch momentarily to the OFF/RESET position. The aircraft master
switch must be ON to turn the transmitter OFF. To actuate the transmitter for tests or in the event the
automatic feature was not triggered by impact, move the switch upward to the ON position and leave it in
that position as long as transmission is desired.
12-13. TESTING EMERGENCY LOCATOR TRANSMITTER. (Testing done the same as noted in
Paragraph 12-5.)
12-14. TESTING PILOTS REMOTE SWITCH. Before performing any operational test of the pilot's
remote switch, the same precautions noted in Paragraph 12-5 must be observed.
a.
Tune the aircraft communications receiver to 121.5 MHz and switch receiver ON, deactivate the
squelch, and turn the receiver volume up until a slight background noise is heard.
NOTE
If the aircraft is not fitted with a communications receiver, request
that the tower listen for your test.
b.
Set the pilot's remote switch to the ON position. Hold the switch in this position for only a few
seconds.
NOTE
The test transmission should have been picked up by the aircraft
communications receiver and/or control tower. During cold
weather there may be a slight delay before transmission occurs.
c.
Set the pilot's remote switch to the momentary OFF, RESET position. The switch is spring
loaded to automatically return to the ARM position.
Reissued: 10/12/79
5A18
ELECTRONICS
5A18