User Guide

190-00571-00 Rev. AGarmin G1000 System Overview for the Beechcraft A36/G36

2-12

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 re-

maining display. An example of reversionary mode entry

due to a failed PFD is shown in Figure 2.7.2.

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 2.2.1), 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.

NOTE: The system alerts the pilot when backup

paths are utilized by the LRUs. Refer to the

Annunciations and Alerts Pilot’s Guide 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 Audio Panel. Pressing this button again deac-

tivates reversionary mode.

AFCS Preﬂight Test

When power is applied to the G1000, the AFCS sys-

tem starts preﬂight system tests. ‘PFT’ is annunciated on

the PFD at the AFCS System Status ﬁeld. The Autopilot

disconnect aural alert tone sounds at the end of the test

and the ‘PFT’ annunciation disappears.

Figure 2.7.2 Reversionary Mode