Pilot's Guide

190-00617-00 Rev. AGarmin G1000 Pilot’s Guide for the Tiger AG-5B

1-12

SYSTEM OVERVIEW

REVERSIONARY MODE

Should a failure occur in either display, the G1000

automatically enters reversionary mode. In reversionary

mode, all important ﬂight information is shown on the

remaining display. Figure 1-6 shows an example where

the PFD fails.

If a display fails, the GIA 63-GDU 1040 Ethernet inter

face is cut off. Thus, the GIA can no longer communicate

with the remaining display (refer to Figure 1-1), and the

NAV and COM functions provided to the failed display by

the GIA are ﬂagged as invalid on the remaining display.

The system reverts to using backup paths for the GRS 77,

GDC 74A, GEA 71 and GTX 33, as required. The change

to backup paths is completely automated for all LRUs,

and no pilot action is required.

Figure 1-7 G1000 Reversionary Mode (Failed PFD)

NOTE: The system alerts the pilot when backup

paths are utilized by the LRUs. Refer to the

Annunciations and Alerts section for further

information regarding these and other system

alerts.

Reversionary mode may also be manually activated by

the pilot if the system fails to detect a display problem.

Reversionary mode is activated manually by pressing

the red DISPLAY BACKUP button at the bottom of the

GMA 1347. Pressing this button again deactivates rever-

sionary mode.

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