COBHAM AVIONICS WULFSBERG ELECTRONICS
ABBREVIATED COMPONENT MAINTENANCE MANUAL
C406-1 (453-5002), C406-1HM (453-5003)
25-62-10
Page 32 of 90
APR 06/10
(a)
It is possible the primary G-switch or one of the auxiliary G-switches could activate the
ELT in either a fixed or rotor wing aircraft as the result of severe maneuvers or a very
hard landing.
(b)
To take the ELT from an “ACTIVE” state back to an “INACTIVE” state, a “RESET” must
occur. See SUBTASK 25-62-10-870-004.
(6)
A warning buzzer is required under C126 TSO approval. The buzzer is powered by the ELT and
therefore not dependent upon the aircraft battery for operation. It is not designed to operate
continuously, but sounds at predetermined intervals and runs for shorter periods toward the
end of ELT battery life.
SUBTASK 25-62-10-870-002
B. Normal Operation
(1)
The cockpit remote switch is in the “ARM” position (i.e., down).
(2)
The local switch on the ELT is in the “OFF” position (i.e., down).
SUBTASK 25-62-10-870-003
C. Manual Activation
(1)
The ELT may be manually activated by placing either the remote switch or the ELT local
switch in the “ON” position.
NOTE: As long as the cockpit remote switch and the ELT local switch are in the ARM/OFF
positions respectively, the ELT will automatically activate on impact.
SUBTASK 25-62-10-870-004
D. ELT Reset
(1)
If the ELT is activated accidently, it will need to be reset.
(2)
Reset the ELT from the cockpit by moving the remote switch to the “ON” position, waiting
approximately one second, and then moving it back to the “ARM” position. If the switch is
already in the “ON” position, move it to the “ARM” position.
(3)
Reset the ELT locally by moving the switch on the ELT to the “ON” position, waiting
approximately one second, and then moving it back to the “OFF” position. If the switch is
already in the “ON” position, move it to the “OFF” position.
NOTE: The ELT cannot be reset if either the cockpit remote switch or the ELT local switch is
in the “ON” position.
SUBTASK 25-62-10-750-001
E.
Functional Check
(1)
A monthly functional check is recommended to verify operational status of the ELT.
(2)
Perform this functional check in accordance with SUBTASK 25-62-10-750-011, on page 46.
