Pilot's Operating Handbook
Section 3
Emergency procedures
EASA Approved
Edition 0 - October 31, 2013
Rev. 4
Page 3.12.21
Dual GPS/SBAS failure
( or annunciation on HSI) 2/2
LOI
DR
► Continuing
If no Alternate Navigation Sources are available :
DeadReckoning(DR) Mode- Active when theairplane is greaterthan 30NM from the
destination airport :
1 - Navigation Use the airplane symbol,. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
magenta course line on the map
display and the amber CDI for course information
● NOTE ●
All information normally derived from GPS turns amber. All of this information
will become less accurate over time.
TAWS is inoperative.
DR mode uses heading, true airspeed, last known wind data, and the last
known GPS position to estimate the airplane current position. DR information
will be available for a maximum of 20 minutes.
MAP – TRAFFIC MAP display is not dependent on GPS information.
The position of displayed traffic relative to the airplane symbol on the map is
still accurate.
●
Loss Of Integrity (LOI) Mode - Active when the airplane is within 30 NM of departure
airport (as calculated from the previous GPS or DR position)
1 - Navigation Fly towards known. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
visual conditions, use ATC or
other information sources as possible
● NOTE ●
All information derived from GPS or DR will be removed from the displays.
TAWS is inoperative.
The airplane symbol is removed from all maps. The map will remain centered at
the last known position. NO GPS POSITION will be annunciated in the center of
the map.
●
End of procedure.
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