BendixKing KSN 770 - Pilots Guide - Manual (Page 70)

KSN 765/770 Integrated Communication Navigation Display
D200802000009
REV 2 Jun 2014
Display States and Mode Control
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Honeywell International Inc. Do not copy without express permission of Honeywell.
GPS Failure Annunciation
Within 1 second of the internal GPS sensor failing, malfunctioning, or
becoming invalid, the amber failure annunciation GPS FAIL is
displayed. If the failure persists, this condition must be
checked/repaired before next flight.
All system functions relying on GPS position will be unavailable,
including:
D
FMS navigation, approach, and guidance capability (use an
alternate navigation system)
D
Terrain awareness
D
Map, overlay, and sensor views based on GPS position and/or track
D
Wind estimates.
GPS Acquisition Status Annunciation
When an insufficient number of GPS satellites for a valid solution
cannot be tracked by the receiver, the GPS ACQ annunciation is
displayed. If the system is in the en route phase of flight when this
occurs, the FMS will transition to dead reckoning operation. All other
system functions of GPS data will treat this the same as a GPS FAIL .
Ensure that the GPS antenna has a clear view of the sky. If the condition
persists, this condition must be checked/repaired before next flight.
GPS Loss of Integrity Status Annunciation
The loss of integrity ( LOI ) annunciation indicates that satellite
coverage is insufficient to pass built--in integrity monitoring tests
applicable to the phase of flight. Another approach or alternate
navigation system may have to be used. Monitor the GPS position
using alternate sources.
FMS Failure Annunciation
An FMS INOP annunciation is displayed when the internal FMS fails,
malfunctions, or becomes inoperative. The ownship symbol is removed
and all flight plan legs are displayed in white (no active legs) when this
condition exists. The KSN can no longer be used for
navigation/approach and may require servicing. The GPS function is
still available for other system functions.
Fan Failure Annunciation
An amber INOP FAN annunciation is displayed when one or both of
the internal fans fails. No immediate action is required but it should be
repaired before next flight.