
Garmin G1000 Cockpit Reference Guide for the Cessna Nav III
190-00384-13 Rev. B 109
Abnormal Operation
Flight
Instruments EIS
Nav/Com/
XPDR/Audio AFCS GPS Nav
Flight
Planning Procedures
Hazard
Avoidance
Additional
Features
Abnormal
Operation
Annun/
Alerts Appendix Index
ABNORMAL OPERATION
REVERSIONARY MODE
Should a system detected failure occur in either display, the G1000 automatically
enters reversionary mode. In reversionary mode, critical flight instrumentation is
combined with engine instrumentation on the remaining display.
Reversionary display mode can also be manually activated by the pilot if the
system fails to detect a display problem. The Reversionary Mode is activated
manually by pressing the red DISPLAY BACKUP Button on the bottom of the audio
panel (GMA 1347). Pressing the red DISPLAY BACKUP Button again deactivates
Reversionary Mode.
NOTE: The Cessna Pilot’s Operating Handbook (POH) always takes precedence
over the information found in this section.
ABNORMAL COM OPERATION
When a COM tuning failure is detected by the system, the emergency frequency
(121.500 MHz) is automatically loaded into the active frequency field of the COM
radio for which the tuning failure was detected. In the event of a dual display failure,
the emergency frequency (121.500 MHz) automatically becomes the active frequency
to the pilot through the pilot headset.
HAZARD DISPLAYS WITH LOSS OF GPS POSITION
If GPS position is lost, or becomes invalid, selected hazards being displayed on the
Navigation Map Page are removed until GPS position is again established.
Loss of Hazard Functions
with Loss of GPS Position
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