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Old 19th September 2009 | 15:43
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BUGS/BEARINGS/BOXES
 
Joined: Nov 2006
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From: the OFCR......and probably somewhere over China zzzzzzzz
If the Airframe is certified for GNSS Approaches it could be a RAIM error or similar.


Only active in dual-
GPS/WAAS installation
with neither GPS/WAAS in
failure condition. Indicates
that position, track or
groundspeed difference
between GPS/WAAS units
is beyond limits. Limits are
as follows:
Position:
Enroute Mode 4NM
Terminal Mode 2NM
Departure Mode .6NM
IFR Approach
Mode .6NM
VFR Approach
Mode .6NM
Track:
If groundspeed is
greater than 30 kts,
miscompare if
difference is more than
4°.
Groundspeed:

10 kts.


just a thought.
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