9.3
Reversion Mode Check
Push the red DISPLAY BACKUP button on the GMA 1347. Verify that the PFD and
MFD displays enter reversion mode (See Figure 9-4). MFD should have valid altitude,
airspeed, vertical speed, COM1, COM2, NAV1, NAV2 and engine instruments.
De-activate reversion mode by pushing the DISPLAY BACKUP button. Verify PFD and
MFD return to normal display modes.
G1000 Supplemental Maintenance Manual
Textron Nav III Series
190-02128-04
Figure 9-4, GDU Reversionary Mode
Page 9-5
Revision 3