System Maintenance Manual

G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air Page 3-7
190-00682-01 Revision G
3.6 Reversionary Mode
Reversionary mode allows for display of information related to safe flight in the event of a display
communication or hardware failure. On this 3-display system, only a manual reversionary mode is
possible. Manual reversionary mode allows the operator to force the pilot or copilot’s PFD into
reversionary mode by pressing the large red button labeled ‘DISPLAY BACKUP’ on the respective
GMA 1347 audio panel.
NOTE
When the ‘DISPLAY BACKUP’ button is pushed to exit reversionary mode, there is a 5-second
debounce (or the GDU waits for 5 consecutive seconds) and then returns to normal mode if no other input
is received. If the ‘DISPLAY BACKUP’ button is pushed again during this 5-second interval, the timer
will repeat the count.
Figure 3-9. Manual Reversion with MFD failure
Figure 3-10. Manual Reversion with pilot PFD failure