Piper Navajo PA-31 Service Manual page 897

PIPER NAVAJO SERVICE MANUAL
12-6. PILOT'S REMOTE SWITCH. (On Serial Nos. 31-7300979 and up.) 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 switch is locked into each position. To move the switch, the toggle must be pulled out and moved
to
the new desired position. On early models the pilot's remote switch is placarded "ON," "ARM," "OFF
RESET." If the pilot's remote switch has been placed in the "ON" position for any reason, the "OFF
RESET' position must be selected for one second before the switch is placed in the "ARM" position. On
later models the pilot's remote switch is placarded "ON/RESET" and "ARM (NORMAL POSITION)." The
switch is normally left in the down or "ARM" position. To turn the transmitter off, move the switch to the
"ON/RESET" position for one second then return it to the "ARM" position. To actuate the transmitter for
tests or other reasons, move the switch upward to the "ON/RESET" position and leave it in that position
as
long as transmission is desired.
CAUTION
Under normal conditions, the remote switch must be set to
ARM.
12-7. TESTING PILOT'S REMOTE SWITCH. Before performing any operational test of the pilot's remote
switch, the following precautions should be observed:
CAUTION
The transmitter operates on the emergency frequencies of 121.5
and 243 MHz; both of these frequencies are monitored by the
various FAA installations. Permission should be obtained from the
FAA/FCC Representative (or other applicable Authority) prior to
testing. Keep your test transmission to a minimal duration.
a.
Tune the aircraft communications receiver to 121.5 MHz and switch the 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 RESET position for one second; then select the ARM
position.
Reissued: 10/12/79
EL ECTRONICS
5A15