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and controls for selecting and managing
audio sources. These panels manage all audio
sources, including COM transceivers, NAV,
ADF, DME and marker beacon receivers, aircraft
intercom and aural warning systems. They
also control the switching of microphones and
headsets. The audio panel also includes a digital
voice recorder, which holds up to 2 minutes
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CITATION MUSTANG OPERATING MANUAL
HDG AP YD FLC 0.630 ALTS
NAV1 111.90 114.10 DIS --.-NM BRG ---°
113.80 110.90
SJC
NAV2
118.200 COM1
136.975
136.975
118.000 COM2
20
10
20
10
1010
4
4
2
2
RAT 0°c ISA +44°c
30300
30200
30100
29900
2200
29800
300 20
00
060°
29.92IN
HDG CRS 283°
21
S
15
12
E
6
3
N
33
30
W
24
150°
15000
XPDR1 1253 ALT R LCL 9:44:38PM
GPS ENR
EDM
HEADING SELECT
MODE ACTIVE
FLIGHT LEVEL CHANGE
MODE ACTIVE
AUTOPILOT
ENGAGED
SELECTED
ALTITUDE
SET TO
15,000 FT
EMERGENCY
DECENT MODE
ANNUNCIATION
SELECTED
HEADING
SET 90° LEFT
OF CURRENT
HEADING
170
230
220
210
190
180
200
M .538
M .630
Figure 16-44. Emergency Descent Mode
and 30 seconds of recorded audio to assist the
pilot in recording ATC clearances.
CONTROLS AND INDICATIONS
The audio panels use small keys for each item.
Above each key is a small, triangle-shaped
LED indicator, which illuminates when the
device for the corresponding button is selected
on that audio panel (Figure 16-45 and Table
16-9). Each audio panel may have different selections
from the other panel.
Power-Up
During aircraft power-up, all audio panel annunciators
illuminate for 2 seconds. Then all
the audio switch selections (and annunciators)
return the setting in effect when the aircraft
was powered down. There are two
exceptions: The speaker and intercom are always
activated during power-up, and remain
active until deselected.
Fail-Safe COM Operation
If both GIAs fail, the audio panels directly connect
the pilot headset and microphone to the
COM1 transceiver, and the copilot headset
and microphone to the COM2 transceiver. (No
audio is available to the speaker in this situation.)
If only one GIA fails, the crewmember
on that side will only have audio access to the
corresponding COM transceiver.
COM Radio Priority
The G1000 includes two COM radios. COM1
is in GIA#1 and COM2 is in GIA#2. Either
pilot may communicate using either COM
radio. Each crew microphone is connected to
a COM radio through a COM MIC key. For
each crewmember, their COM MIC selection
(COM MIC1 or COM MIC2) makes the selected
COM radio their active transceiver,
connected to their microphone. On each PFD,
this is indicated by green digits for the active
frequency of the primary transceiver. All
other frequencies use white digits. The pilot
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CITATION MUSTANG OPERATING MANUAL
DISPLAY BACKUP
VOL
ICS MSTR
SQ
COM1
MIC COM1
COM2
MIC COM2
COM3
MIC COM3
PA TEL
SPKR
DME
HI
SENS
ADF
NAV1
AUX
NAV2
MUSIC
REC PLAY
INTR
COM
MAN
SQ
MKR
MUTE
1
3
5
7
9
11
13
15
17
18
20
22
24
23
21
19
16
14
12
10
8
6
4
2
Figure 16-45. Audio Panel
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CITATION MUSTANG OPERATING MANUAL
DRAFT
# CONTROL DESCRIPTION
1 COM1 MIC Selects the #1 transmitter for transmitting. COM1 receive is simultaneously selected when this key is
pressed, allowing received audio from the #1 Com receiver to be heard.
2 COM1 When selected, audio from the #1 Com receiver can be heard.
3 COM2 MIC Selects the #2 transmitter for transmitting. COM2 is simultaneously selected when this key is pressed
allowing received audio from the the #2 Com receiver to be heard.
4 COM2 When selected, audio from the #2 Com receiver can be heard.
5 COM3 MIC Not used on the Cessna Citation Mustang.
6 COM3 Not used on the Cessna Citation Mustang.
7 PA Selects the passenger address system (if installed). The selected Com transmitter is deselected when
the PA key is pressed. There are no cabin speekers. Headset jacks for passagers are an option.
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