COMMUNICATIONS, AUDIO INTEGRATING
Description
Aircraft Operations Manual
4/1.1
PAGE
12
Apr 01/15
With Mod. No. 2600 installed
A29411
XMIT SELECT
HOT
MIC
COLD
BOOM
MASK
NORM
EMER
1 COM 2 COM 3
HF
INT
VOICE
IDENT
PTT
1 NAV 2
PA
SPKR
MKR
1 ADF 2
A
MIC OBSERVER SWITCH
A
Observer/Pilot Hand Microphone selector switch (guarded)
This switch selects which hand microphone is active for transmission.
OBSVR
−
Observer hand microphone selected.
PILOT
−
Pilot hand microphone selected.
With the switch in the OBSVR position it is still possible for the pilot to use
the PTT buttons on the ACP and control wheel to transmit.
Fig. 8 Observer/pilot hand microphone switch