BendixKing KSN 770 - Pilots Guide - Manual (Page 278)

KSN 765/770 Integrated Communication Navigation Display
D200802000009
REV 2 Jun 2014 15-5
Flight Management System (FMS)
Honeywell International Inc. Do not copy without express permission of Honeywell.
Position Initialization
During power--up, the FMS position is automatically updated to the
GPS position when a valid GPS position is available. When no GPS
position is available, GPS FAIL or GPS ACQ is displayed indicating
the GPS position is not available.
If GPS position becomes
unavailable during flight, the
KSN enters dead reckoning
( DEAD RECKONING ) mode
for 15 minutes and assumes the
pilot will follow the flight plan. When dead reckoning is active and
panning is not active, the ownship symbol continues to move across the
existing flight plan with the position data provided by the FMS (except
when in the charts view ).
After 15 minutes of no GPS
position, LOSS OF NAV is
displayed, replacing the
DEAD RECKONING
annunciation. The ownship
symbol remains displayed and the active leg in the flight plan is
displayed in green when the loss of navigation condition exists with a
valid GPS position. The ownship symbol is removed from display and
all legs of the active flight plan are displayed in white when both the loss
of navigation condition is met and the GPS position is invalid.