Piper Cherokee LANCE, Service Manual

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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
XI - ELECTRONICS 07/15/06
3F8
SECTION XI
ELECTRONICS
11-1. INTRODUCTION. This section of the manual contains instructions relating to the removal,
installation and operational checks of the Emergency Locator Transmitter (ELT) and also removal and
installation of the RCA Weather Scout radar antenna.
11-2. EMERGENCY LOCATOR TRANSMITTER.
11-3. DESCRIPTION. The electrical power for the ELT is totally supplied by its own self-contained
battery. The magnesium batteries used on early models have a service life of four years. However, to
comply with FAA regulations, magnesium batteries must be replaced every 2 years. If the transmitter has
been used in an emergency situation during this 2 year period or it has more than one hour of
accumulated test time, the battery must be replaced according to FAA regulations. To replace the battery
pack in the transmitter, it is necessary to remove the transmitter from the aircraft. (Refer to paragraph
11-4.)
11-4. BATTERY REMOVAL AND INSTALLATION. (2 year, magnesium battery, refer to Figure 11-1.)
The ELT is located on mounting brackets on the right side of the fuselage aft of sta. 259.30.
NOTE: One or more of the following batteries may no longer be available. See parts catalog and
consult your local Piper Service Center for available replacement options, if any. As of the 2006
revision, Artex Aircraft Supplies, 14405 Keil Rd NE, Aurora, OR 97022 (www.artex.net) offered
a line of replacement batteries.
Alternatively, installation of a new aftermarket ELT by an FAA-approved repair station under a
field approval (i.e. - FAA Form 337) from the local FAA Flight Standards District Office (FSDO)
is also an option. If such an ELT is installed, the Instructions for Continued Airworthiness (ICA)
provided in the field approval or from the aftermarket ELT manufacturer will supercede those
provided herein.
a. Remove the access plate on the right side of the fuselage aft of sta. 259.30.
b. Set the ON/ARM/OFF switch on the transmitter to the OFF position.
c. Disconnect the antenna coax from the transmitter.
d. Disconnect the harness to the pitot’s remote switch.
e. Remove the rear mounting bracket by pulling the plastic knob out. Remove the transmitter from the
airplane.
f. Remove the two long or four short screws securing the transmitter plain end cap. Remove the plain
end cap.
g. Disconnect the battery connector from the board terminals.
h. Withdraw the battery pack from the transmitter case.
i. Before installing the new battery pack, check the replacement date printed on the battery. Transfer
this date onto the outside of the ELT.
j. Slide the new battery pack, plain end first, into transmitter. It may be necessary to rotate the battery
slightly to get it seated properly in the transmitter case and to achieve correct orientation of the
battery connector.