
Garmin G1000 Cockpit Reference Guide for Mooney M20M & M20R
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SECTION 3 – AUDIO PANEL
3.5 INTERCOM SYSTEM (ICS) ISOLATION
The intercom system (ICS) provides four (4) isolation
modes: ALL, PILOT, COPILOT, and CREW. The de-
sired mode can be selected or deselected using the PILOT
and COPLT keys.
PILOT Mode
PILOT mode is selected when only the PILOT key is
annunciated. In PILOT mode, the pilot can hear the se-
lected radios, whereas the copilot and passengers can only
communicate with each other and hear MUSIC 1.
COPILOT Mode
COPILOT mode is selected when only the COPLT key
is annunciated. In COPILOT mode, the copilot is isolated
from everyone and can only hear MUSIC 2. In this mode,
the pilot and passengers can hear the selected radios as
well as MUSIC 1 and can also communicate with each
other. The transitions between the possible ICS isolation
states are summarized in the table below.
Current ICS Isolation State
Input PILOT COPILOT CREW ALL
PILOT Key Press
ALL CREW COPILOT PILOT
COPLT Key Press
CREW ALL PILOT COPILOT
Table 3-2 ICS Isolation Mode Transitions
Figure 3-7 ICS Isolation
CREW Mode
CREW mode is selected when both the PILOT and
COPLT keys are annunciated. In CREW mode, both the
pilot and copilot can hear the selected radios and MUSIC
1
and
can also communicate with each other, while the pas-
sengers can only hear MUSIC 2.
ALL Mode
ALL mode is selected when neither the PILOT nor the
COPLT key is annunciated. In ALL mode, everyone hears
both the selected radios and MUSIC 1, and everyone is
able to communicate with everyone else.
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