IFD500 Series Pilot Guide
General 7-9
GPS Integrity Lost Crosscheck Nav
This is alerting about imminent exceedance of horizontal
fault detection limits or protection levels. Crosscheck the
nav solution and determine the best course of action but if
on an approach, a Missed Approach is recommended.
Using ground track for SVS
The IFD had a valid heading source that stopped providing
heading. The SVS view is being shown with respect to
ground track instead.
Reduced backlight maximum
Main supply voltage has fallen to approximately 11VDC.
Check the aircraft alternators are on and functional.
Consider load shedding the bus that is powering the IFD.
GPS integrity is insufficient for LP
Approach
Transition to a non-LP approach and the appropriate
minima.
GPS integrity is insufficient for LPV
Approach
Transition to a non-LPV approach and the appropriate
minima.
GPS integrity is insufficient for LPV
Approach
Transition to a non-LPV approach and the appropriate
minima.
LPV Unavailable
Use LNAV MDA
LPV Unavailable
Use L/VNAV DA
LP Unavailable
Use LNAV MDA
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