Piper Arrow IV, Maintenance Manual

Page: 181 / 752

PILOT’S REMOTE SWITCH.
A pilot’s remote switch, located on the left side 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.
TESTING EMERGENCY LOCATOR TRANSMITTER.
The transmitter operates on the emergency frequencies of 121.5 and 243 MHz; both of these frequencies
are monitored by the various FAA installations. Before performing any operational test of the ELT, the
following precautions should be observed:
—CAUTION—
Testing of an ELT should be conducted in a screen room or metal
enclosure to ensure that electromagnetic energy is not radiated
during testing. If a shielded enclosure is not available, testing
may be performed in accordance with the following procedures:
(1)
Test should be no longer than three audio sweeps.
(2) If the antenna is removed, a dummy load should be
substituted during the test.
(3) Test should be conducted only within the time period
made up of the first five minutes after any hour.
(4) If the operational tests must be made at a time not included
within the first five minutes after the hour, the test should
be coordinated with the closest FAA Tower or Flight
Service Station.
Consult FAA Advisory Circular AC 20-81 for detailed
information concerning above caution.
1. Remove the access plate on the right side of the fuselage aft of sta. 228.30.
2. 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.
3. On the transmitter, set the ON/ ARM/ OFF switch to the ON position. Keep the switch in this position
for only a few seconds; then set to the OFF position. Return to the ARM position.
—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.
23-10-05
Page 23-04
December 1, 1978
1H13
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL