Ameri-King AK-451-ELT - Manual (Page 87)

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3.4 PERIODIC MAINTENANCE (INSTRUCTIONS FOR CONTINUED
AIRWORTHINESS):
REFERENCES: FAR Part 91.207, Part 43 Appendix D (i).
FAR Part 91.207 Paragraph (d)
FAR Part 91.407
Refer to Appendix B for Maintenance Check List with Compliance Cross
References.
PURPOSE:
To insure continued reliability of your ELT, it must be inspected for damage and wear
which could be caused by age, exposed elements, vibrations, etc. Even the best
designed equipment, if not properly maintained and cared for, will eventually fail.
IMPORTANT NOTES:
The following inspections must be performed, a minimum of one time every year:
3.4.1 Secure Inspection: Inspect the ELT Main Unit and Mounting Tray to insure
all fasteners and mechanical assemblies are secure.
3.4.2 Corrosion Inspection for Coaxial Cable: Inspect the Coaxial Cable
connecting the ELT Main Unit to the Antenna for cuts or abrasions on its outer jacket.
Disconnect the BNC connectors on each end. Examine both the BNC connectors and
the mating plug on the Antenna and the ELT Main Unit for any signs of corrosion.
3.4.3 Corrosion Inspection for Remote Wiring Modular Cable: Inspect the
Remote Wiring Modular Cable, connecting the ELT Main Unit to the Remote Unit of
signs of wear or abrasion on its outer jacket. Remove the Modular Connecting Cable
and inspect and jack and plug assembly for corrosion.
3.4.4 Battery Expiration Date Check: Check the expiration date of the ELT
Main Unit and the Remote Unit Batteries. Replace if necessary.
3.4.5 Battery Leakage Check: Remove the Battery Case and inspect the Battery
Compartment for signs of corrosion or battery leakage. If any battery leakage is
present, all batteries must be replaced. The Battery useful life is 5 years.
3.4.6 Operational Test: After completing the above inspections, a Functional Test
as described in Paragraph 3.3 must be performed to verify proper operation.
3.4.7.1 G-Switch Check: Ensure that the Main Switch on the ELT main unit must
be selected at “ARM: position at all times. Activate the ELT using applied force. The
direction for mounting and force activation is indicated on the ELT. The AK-451-
(AF)(AP) ELT can be activated by using a rapid forward (throwing) motion coupled
by a rapid reversing action. Verify that the ELT has been activated by use of the
Wattmeter, the Airplane’s VHF Radio Communications Receiver when tuned to
121.5 MHz, or other means (see Note 1). The ELT must then be reset by pressing
either the RESET push button located on the ELT main unit or the ELT Remote Unit.