1
st
Edition - Rev. 4
Section 3 – EMERGENCY PROCEDURES
AVIONIC SYSTEM FAILURES
P-Mentor – Aircraft Flight Manual Page 3 - 19
4.12. NAV/GPS failure
In case of loss of navigation unit, try to inform ATC of emergency conditions and
apply procedure 4.11 in addition to the following steps.
In case of loss of, or invalid NAV/GPS signal during en-route or terminal phase of
flight:
1. Navigation Instrument ………………….
SWITCH to NAV/GPS
source available
If G3X Touch internal GPS is the only navigation source available:
2. Report to ATC and continue to flight under Visual Flight Rules.
If on an instrument approach at the time the navigation signal is lost:
1. Missed Approach …..………………….
If the system automatically reverts to using the G3X Touch GPS
navigation source due to unavailability of the GTN 650 Xi, if
installed, GPS navigation data, 'REV' is display in the lower left
quadrant of the HSI and VFR is displayed in the lower right
quadrant on the PFD. In addition, a system status message
'Using internal GPS flight plan for navigation' is displayed.
The G3X Touch Internal GPS flight plan is only for VFR use.
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