NOTE: Steps (1) through (11) are applicable any time the ELT has been removed and undergoes
reinstallation. Step (12) is only applicable at initial installation or if the wiring and/or coax
cables have been disturbed.
13) Test the ELT installation in accordance with the requirements of SUBTASK 25-62-03-750- on page 34.
NOTE: It is very important that the cockpit remote switch panel light illuminates immediately upon
ELT activation. If the light fails to illuminate immediately and stay on steady, recheck the
interface wiring and connections between the ELT and the remote switch panel. The ELT
local LED flashes every 3-4 seconds.
NOTE: If verification of the digital message (i.e., 406 MHz Burst) is desired, follow the procedures
outlined in SUBTASK 25-62-03-750- on page 33.
SUBTASK 25-62-03-450-001
B. Harness ELT Receptacle Sealing
1) Seal the harness receptacle at the ELT end to prevent moisture from penetrating the connection, thus
preventing water from beading up and causing bridging between connector pins resulting in possible
activation of the ELT. Use the following procedure:
NOTE: Perform the sealing process once all tests have been satisfactorily completed and all
harness connections have been verified to be correct.
a) Remove the mounting frame cap from the ELT.
b) Unplug the receptacle from the ELT or pull the receptacle free of the mounting frame cap, as
applicable.
c) Seal the back of the receptacle with GE RTV 162, or equivalent, such that moisture cannot penetrate
the backside of the receptacle around the terminal pins.
d) Apply Dow Corning® 4 Electrical Insulating Compound, or an equivalent meeting MIL-S-8660C,
around the receptacle pins, such that the pin area is filled with compound.
e) Plug the harness receptacle into the ELT.
f) Wipe up excess sealing compound.
g) Reinstall the mounting frame cap torquing the thumbscrews to no more than 18 lb-in. (203 N•cm).
SUBTASK 25-62-03-410-002
C. Installation Documentation
1) Make appropriate logbook (i.e., aircraft records) entries and submit FAA Form 337, along with any
supporting data required by the FAA for approval of the installation, as applicable.
NOTE: Refer to TASK 25-62-03-410-801 on page 42 for additional information on installation
approvals.
2) In countries other than the United States, make appropriate aircraft records entries and submit
documentation as required for installation approval in accordance with national regulatory authorities.
To Next Page
Loading...
