COMMUNICATIONS, AUDIO INTEGRATING
Operation
Aircraft Operations Manual
4/1.2
PAGE
1
Apr 01/15
1.
LIMITATIONS
Not applicable.
2.
NORMAL OPERATION
The operation is described individually under each system which is connected to the Audio Integrating sys-
tem; VOR/ILS, DME, ADF, PA/INTERPHONE, VHF COM, HF COM and UHF COM.
3.
ABNORMAL OPERATION
CONDITIONS
ABNORMAL PROCEDURES
3.1
LOSS OF COM-
MUNICATION
ACTIONS
1.
Headsets
CHECK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−
Check for faulty headset by connecting them one at a time.
2.
PTT button
CHECK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−
A faulty PTT button can block the system but the COMs can never transmit
longer than 2 min. when transmission will be shut off automatically.
Communication still lost
3. NORM/EMER switch
EMER
. . . . . . . . . . . . . . . . . . . . . . . .
−
COM 1, L audio control panel.
−
COM 2, R audio control panel.
Communication re
−
established
4. The audio control panel failed.
−
Only the COM can be used with switch in EMER. All other functions
must be controlled by the opposite audio control panel.
−
The COM audio level becomes fixed and is not adjustable.
−
The PTT function can only be provided from the PTT button on the con-
trol wheel.
L ACP:
COM 1
−
L control wheel.
R ACP:
COM 2
−
R control wheel.
5. End of procedure.
Communication still lost
4. Communication lost.
5. End of procedure.
Communication re
−
established
3.
If headsets failed use hand microphones and loudspeakers.
4.
End of procedure.