COMMUNICATIONS, UHF COM
Operation
Aircraft Operations Manual
4/6.2
O
PAGE
5
Apr 01/15
3.
ABNORMAL OPERATION
CONDITIONS
ABNORMAL PROCEDURES
3.1
LOSS OF COM-
MUNICATION
ACTIONS
1.
SQUELCH
CHECK.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.
Channel/Frequency
RETUNE.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.
PTT button
CHECK.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.
ACP
CHECK.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.
Headsets
CHECK.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.
End of procedure.
3.2
UHF DEAD
ACTIONS
1.
CBs L
−
14 (UHF)
CHECK/RESET
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.
End of procedure.
3.3
TRANSMIT
TIMEOUT
If the transmitter is active for more than 90 seconds, a transmit timeout error
occurs. This is indicated by the flashing of every illuminated segment of the
display.
The transmitter will go inactive until the fault is found or an interruption in the
DC power supply occurs. In most cases, this is caused by the microphone
PTT button being stuck or a transmission in excess of 90 seconds.
3.4
FAULT
REPORTING
ACTIONS
1.
CHAN and MODE buttons
PRESS AND HOLD
. . . . . . . . . . . . . . . . . . . . . . .
−
When the CHAN and MODE buttons are simultaneously pressed and held,
the display shows software version and revision along with any currently
present faults.
(Cont’d)
