Abnormal Procedures - Garmin GTN 625 Manual Supplement

GARMIN Ltd. or its Subsidiaries, c/o
Garmin International 1200 E. 151
Olathe, KS 66062 USA
3.2

Abnormal Procedures

3.2.1 LOSS OF GPS/SBAS NAVIGATION DATA
When the GPS/SBAS receiver is inoperative or GPS navigation information is not
available or invalid, the GTN will enter one of two modes: Dead Reckoning mode
(DR) or Loss Of Integrity mode (LOI). The mode is indicated on the GTN by an
amber "DR" or "LOI".
If the Loss Of Integrity annunciation is displayed, revert to an alternate means of
navigation appropriate to the route and phase of flight.
If the Dead Reckoning annunciation is displayed, the map will continue to be
displayed with an amber 'DR' overwriting the ownship icon. Course guidance
will be removed on the CDI. Aircraft position will be based upon the last valid
GPS position, then estimated by Dead Reckoning methods. Changes in true
airspeed, altitude, heading, or winds aloft can affect the estimated position
substantially. Dead Reckoning is only available in Enroute and Oceanic modes.
Terminal and Approach modes do not support Dead Reckoning.
190-01007-A2 Rev. 1
FAA APPROVED DATE: _________________
AIRPLANE FLIGHT MANUAL SUPPLEMENT or
st
Street SUPPLEMENTAL AIRPLANE FLIGHT MANUAL
for STC SA02019SE-D GARMIN GTN
MARCH 18, 2011
NAVIGATION SYSTEM
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