Ameri-King AK-451-ELT - Manual (Page 124)

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APPENDIX D
EXCERPT FROM FAA AC 91-44A
PARAGRAPH 8.A WHICH DEFINES WHEN BATTERY REPLACEMENT
MAY BE DONE UNDER FAR 43.3 (H)
AS PREVENTIVE MAINENANCE
“… The pilot can do the replacement if the preventive maintenance limitations of Part
43.3 (h) of the FAR are complied with. For example, a portable type ELT that is
readily accessible and can be removed and reinstalled in the Aircraft by a simple
operation should be considered Preventive Maintenance. Fixed type ELT installations
are often permanently mounted in a remote area of the Aircraft near flight control
cables, vital Aircraft components and critical attachments to the Aircraft structures.
Installations of this nature require an external Antenna and often a remote ON / OFF
transmitter control switch that is usually located near the pilot’s flight position. This
type installation is complex and battery replacement should be accomplished by a
Certificated Mechanic or Certificated Repair Station … “