Abnormal Operation; Reversionary Mode; Abnormal Gps Conditions - Garmin G1000 NXI Cockpit Reference Manual

REVERSIoNaRy ModE

NoTE: The system alerts the pilot when backup paths are utilized by the LRUs. Refer
to the Appendices for further information regarding system-specific alerts.
In the event of a display failure, the system can be manually switched to reversionary (back-
up) mode (all remaining displays enter reversionary mode). In reversionary mode, all impor-
tant flight information is presented on the remaining display(s) in the same format as in normal
operating mode.
If a display fails, the appropriate IAU-display Ethernet interface is cut off. Thus, the IAU
can no longer communicate with the remaining display, and the NAV and COM functions
provided to the failed display by the IAU are flagged as invalid on the remaining display. The
system reverts to backup paths for the AHRS, ADC, Engine/Airframe Unit, and Transponder,
as required. The change to backup paths is completely automated for all LRUs and no pilot
action is required.
Reversionary mode may be manually activated by pressing the Audio Panel' s red DISPLAY
BACKUP Button. Pressing this button again deactivates reversionary mode.

aBNoRMaL GPS CoNdITIoNS

The annunciations listed in Table 2-4 can appear on the HSI when abnormal GPS condi-
tions occur. Refer to the Flight Management Section for more information on Dead Reckoning
Mode.
annunciation Location
GPS LOI Right of HSI
GPS INTEG OK Right of HSI
Lower left
DR of aircraft
190-02622-00 Rev. A

aBNoRMaL oPERaTIoN

Loss of Integrity Monitoring – GPS integrity is insufficient for the
current phase of flight
Integrity OK – GPS integrity has been restored to within normal limits
(annunciation displayed for 5 seconds)
Dead Reckoning – System is using projected position rather than GPS
position to compute navigation data and sequence active flight plan
symbol waypoints
abnormal GPS Conditions annunciated on HSI
Garmin G1000 NXi Cockpit Reference Guide for the da62
abnormal operation
description
137