ACR&Artex ME406 Portable ELT - Manual (Page 70)

ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ME406P (453-6611)
25-62-31
Page 70 of 85
JUN 25/13
(7) Connect the antenna coax cable to the ELT.
(8) Tie up excess slack in the harness and coax cable, such that they form drip loops.
NOTE: Steps (1) through (7) are applicable any time the ELT has been removed and
undergoes reinstallation. Step (8) is only applicable at initial installation or if the
wiring or coax cable has been disturbed.
(9) Test the ELT installation in accordance with the requirements of SUBTASK 25-62-31-750-011
on page 41.
NOTE: It is very important the cockpit remote switch LED immediately begins flashing
continuously upon ELT activation. If the LED fails to start flashing, recheck the
interface wiring and connections between the ELT and the cockpit remote switch.
NOTE: If verification of the digital message (i.e., 406 MHz burst) is desired, follow the
procedures outlined in SUBTASK 25-62-31-750-009 on page 40.
SUBTASK 25-62-31-450-001
B. Harness ELT D-Sub Plug Sealing
(1) Seal the D-Sub plug 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) Disconnect the remote switch harness D-Sub plug from the ELT.
(b) Separate the D-Sub housing halves.
(c) Inject Dow Corning® 4 Electrical Insulating Compound or an equivalent meeting MIL-S-
8660C into the back side of the plug, such that the insulating compound surrounds the
D-Sub pin area and covers the back of the plug.
(d) Reinstall the housing halves.
(e) Inject Dow Corning® 4 Electrical Insulating Compound or an equivalent meeting MIL-S-
8660C around the male pins of the ELT receptacle.
(f) Connect the remote switch harness plug to the ELT.
SUBTASK 25-62-31-410-002
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 25-62-31-450-801 on page 51 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.