B737
MAINTENANCE MANUAL
EFFECTIVITY
Post ELT STC ST03081AT
23-24-00
PAGE 201
JAN 02/07
EMERGENCY LOCATOR TRANSMITTER SYSTEM
MAINTENANCE PRACTICE
1. General
A.
To comply with the FAA & Canadian Aviation Regulations, ARTEX Aircraft Supplies Provides the
following maintenance procedures. These procedures include checks required in the United
Sates.
B.
In addition to the maintenance checks described in this section of the Aircraft Maintenance
Manual supplement a monthly “self test” of the ELT is recommended.
C.
FAR 91.207(d) requires that the ELT be inspected within 12 calender months after the last
inspection for:
(1)
Proper Installation
(2)
Battery Corrosion
(3)
Operation of controls and crash sensors
(4)
The presence of sufficient signal radiated from its antenna (see D.(17), Antenna Test)
D.
Periodic Maintenance Inspection Procedure
NOTE: Steps (6) through (14) are mandatory in Canada.
(1)
Remove ELT Connections
(a) Loosen the thumbscrew on the end cap.
(b)
Pull the end cap away from the ELT. Lift up the Protective Top Cover and push away
from the connector end of the ELT to remove. Lay Protective Top Cover aside.
(c) Remove all interconnections to the ELT unit and ELT antenna.
(d)
Visually inspect and confirm proper seating of all connector pins. Special attention
should be given to coaxial center conductor pins which are prone to retracting into
the connector housing.
(2)
Remove ELT
(a)
Lift the ELT up from the connector end (careful use of a flat blade screw driver as a
lever makes this step easier) to remove the ELT unit from its mounting tray.
(b)
Inspect the mounting hardware. Ensure the hardware is free of cracks or other
obvious damage.
(c)
All required mounting hardware should be installed and secured and must meet the
integrity requirements as defined herein.
NOTE: Do not use contact cleaner on ELT components. Such chemical agents can be highly
destructive to the mounting hardware and ELT housing, causing cracking, fracturing and
breakage.
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