DATA TRANSMISSION AND AUTOMATIC CALLING
EMERGENCY LOCATOR TRANSMITTER
DESCRIPTION
Electrical power for elt is totally supplied by its own self-contained battery. FAA regulations require
battery be replaced at expiration date printed on battery or if transmitter has been used in an emerg e n c y
situation or has more than one hour of accumulated test time. To replace battery pack in transmitter, it is
necessary to remove transmitter from aircraft. (Refer to Battery Removal and Installation.)
BATTERY REMOVAL AND INSTALLATION (COMMUNICATIONS COMPONENTS CORP.)
(Refer to latest revision of Piper Service Letter No. 820.)
The elt is located on right side of airplane tail section. ahead of stabilator.
1. Remove access plate on right side of fuselage aft of sta. 228.30.
2. Rotate ON/ARM/OFF switch to OFF position.
3. Disconnect antenna coax cable (twist left, then pull outwards).
4. Disconnect harness to pilot’s remote switch.
5. Remove forward mounting bracket by pulling black plastic knob out. Remove transmitter from
airplane.
6. Remove six screws securing transmitter cover. Remove cover.
7. Lift out old battery pack.
8. Copy expiration date on battery into space provided on external elt name and date plate.
9. Disconnect and replace with a new battery pack. Nylon battery connector is a friction fit and is easily
removed by pulling on exposed end.
10. Insert transmitter into airplane and fit into place. Replace mounting bracket by pushing black plastic
knob into place.
11. Reconnect pilot’s remote switch harness and antenna coax cable to transmitter.
12. Set ON/ARM/OFF switch to ARM position.
—NOTE—
It may be advisable to test the unit operation before installing
access plate. (See Testing Emergency Locator Transmitter.)
13. Reinstall access plate previously removed.
14. Make entry in aircraft logbook, including new battery runout date.
—NOTE—
Inspect 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.
213 - 21 - 00
Page - 23 - 02
Reissued: August 1, 1986
1H15
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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