IFD400 Series Pilot Guide
General 6-9
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.
GPS integrity is insufficient for L/VNAV
Approach
Transition to a non-L/VNAV approach and the appropriate
minima.
Altitude invalid - leg will not auto
sequence
In basic E-M aircraft where the IFD does not have altitude
input, this message will appear when the FMS active leg
terminates at an altitude. In this case, the FMS flight plan
will need to be manually sequenced to the next leg. Failure
to do so will cause the FMS to fly the course/heading
indefinitely.
L/VNAV Unavail.
Use LNAV MDA
LPV Unavailable
Use LNAV MDA
LPV Unavailable
Use L/VNAV DA
LP Unavailable
Use LNAV MDA
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