
Garmin G1000 Cockpit Reference Guide for the Cessna Citation Mustang
190-00600-01 Rev. C
65
Annunciations & Alerts
GIA 63W Message Advisories (Cont.)
Message Comments
COM1 PTT
– COM1 push-to-talk key
is stuck.
The COM1 and/or COM2 external push-
to-talk switch is stuck in the enable (or
“pressed”) position. Press the PTT switch
again to cycle its operation.
If the problem persists, the G1000 system
should be serviced.
COM2 PTT
– COM2 push-to-talk key
is stuck.
COM1 RMT XFR
– COM1 remote
transfer key is stuck.
The COM1 and/or COM2 transfer switch is
stuck in the enabled (or “pressed”) position.
Press the transfer switch again to cycle its
operation. If the problem persists, the G1000
system should be serviced.
COM2 RMT XFR
– COM2 remote
transfer key is stuck.
LOI
– GPS integrity lost. Crosscheck
with other NAVS.
GPS integrity is insufficient for the current
phase of flight.
GPS NAV LOST
– Loss of GPS
navigation. Insufficient satellites.
Loss of GPS navigation due to insufficient
satellites.
GPS NAV LOST
– Loss of GPS
navigation. Position error.
Loss of GPS navigation due to position error.
GPS NAV LOST
– Loss of GPS
navigation. GPS fail.
Loss of GPS navigation due to GPS failure.
ABORT APR
– Loss of GPS
navigation. Abort approach.
Abort approach due to loss of GPS
navigation.
APR DWNGRADE
– Approach
downgraded.
Use LNAV minima when approach is
downgraded.
TRUE APR
– True north approach.
Change HDG reference to TRUE.
Displayed after passing the first waypoint of
a true north approach when the nav angle is
set to ‘AUTO’.
GPS1 SERVICE
– GPS1 needs
service. Return unit for repair.
A failure has been detected in the GPS1
and/or GPS2 receiver. The receiver may still
be available. The G1000 system should be
serviced.
GPS2 SERVICE
– GPS2 needs
service. Return unit for repair.
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