Piper PA-28-161, Maintenance Manual

Page: 329 / 1104

PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 1
Nov 30/06 2F17
25-60-00
EMERGENCY
Emergency Locator Transmitter (ELT) (Artex ELT 110-4)
A. Description
The Artex ELT 110-4 transmits on 121.5 mHz and 243.0 mHz, and is designed to meet or exceed
the requirements of TSO C91a and FAR Part 91. Electrical power for the ELT transmissions is
totally supplied by its own self-contained battery. The battery must be replaced if the transmitter has
been used in an emergency situation or if accumulated test time exceeds one hour, or no later than
the replacement date marked on the transmitter label, whichever comes first.
The Artex 110 cannot be accidentally activated by dropping the unit, handling it roughly, or during
shipping. However, when properly mounted, and locked into its mounting tray, the ELT will activate
in a crash, regardless of the cockpit remote switch and ELT. switch position. The normal position of
the ELT switch is in the down or OFF position. The normal position of the remote cockpit switch is in
down or ARM position
Whenever the ELT is activated, a red light located just above the remote cockpit switch will blink to
alert the pilot or maintenance personnel. Should the ELT be activated accidentally, it must be reset.
To reset:
(1) Position the remote cockpit switch to ON, then immediately reposition it to ARM, or;
(2) Position the switch on the ELT to ON, then immediately reposition it to OFF.
B. Battery (Refer to Figure 1.)
(1) Removal
(a) In engine compartment, disconnect and remove positive cable from battery.
(b) At right side of empennage, remove four (4) screws and remove ELT access panel.
(c) Remove ELT from the airplane by:
1 Loosening the two screws on the front of the mounting tray and pull mounting tray
cap off.
2 Disconnecting coax (antenna) cable.
3 Disconnecting the Molex cable from the ELT unit.
4 Remove unit from airplane.
(d) Remove the four screws on the bottom of the ELT securing the battery pack.
(e) Disconnect battery pack connector from main unit.
(f) Remove battery pack from unit.
(2) Installation
(a) Securely plug in new battery pack connector to main unit.
(b) Immediately reset unit by positioning unit switch to ON, then to OFF.
(c) Fit new battery pack into place. Ensure all gaskets are properly aligned.
(d) Replace the four screws. Dress wires away from standoffs to avoid pinching wires
between standoffs and the battery pack.
(e) Install unit into mounting tray:
1 Connect molex and coax cables to ELT unit.
2 Install mounting tray cap and secure to front of mounting tray with the two screws.
(f) Replace ELT access panel and secure with four (4) screws.
(g) In engine compartment, install positive cable to battery.
(h) Test transmitter, see below.