Cockpit Reference Guide

Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
190-00384-11 Rev. A
13-18
SECTION 13 – ANNUNCIATIONS
& ALERTS
GIA 63W Message Advisories (Cont.)
Message Comments
COM1 SERVICE – COM1 needs
service. Return unit for repair.
The system has detected a failure in COM1 and/or COM2. COM1 and/or COM2
may still be usable. The system should be serviced when possible.
COM2 SERVICE – COM2 needs
service. Return unit for repair.
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 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 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.
Vertical guidance generated by WAAS is unavailable, use LNAV only minimums.
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 system should be serviced.
GPS2 SERVICE – GPS2 needs
service. Return unit for repair.