IFD500 Series Pilot Guide
7-34 General
Consider cycling power on the affected IFD via the top
left power knob
After the flight, notify an Avidyne Service Center or
Avidyne Customer Support to coordinate for a repair
action
LOSS OF GPS (DEAD RECKONING)
Failure Indication:
A “Dead Reckoning” yellow CAS Caution message is issued and
the map will display “Dead Reckoning” along the top left edge of
the map.
Functionality Lost:
Following loss of GPS navigation, Dead Reckoning (DR) provides
limited navigation capability for up to 5 minutes. The IFD will use
speed and last known position at the time of GPS loss along with
any heading data it may have to provide an estimate of aircraft
position. At the end of that 5 minute period, if GPS lock has not
been reacquired, the system will transition to No GPS and
provide the appropriate CAS message and remove the ownship
symbol from the moving map.
All GPS navigation should remain unaffected during DR mode,
albeit with less accuracy and LPV approaches will be terminated
due to loss of integrity so higher minimums for the less accurate
GPS approaches will need to be used.
Some safety and alerting functions will be lost if GPS is
unavailable including TAWS, FLTA, and altitude callouts.
Recommended Pilot Action:
In the event of a GPS position fix loss, the pilot’s plan of action
will vary based on the pilot, aircraft configuration, phase of flight
and other factors. Taking into account those variations, pilots
should consider the following actions:
Establish safe separation from terrain, traffic and
hazardous weather, using ATC assistance as necessary
If the affected IFD is in use for primary nav or com
†
,
transition to secondary GPS or VHF Nav/Com unit(s), if
available
Summary of Contents for IFD510
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Page 140: ...IFD500 Series Pilot Guide 3 50 FMS Subsystem Weather Data on Info Tab Info Tab Nearby Navaids ...
Page 150: ...IFD500 Series Pilot Guide 3 60 FMS Subsystem User Waypoint Airfield Naming Example ...
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Page 180: ...IFD500 Series Pilot Guide 4 24 Map Subsystem ADS B Lightning Coverage Area Shadow ...
Page 252: ...IFD500 Series Pilot Guide 5 16 Aux Subsystem Trip Statistics Calculator ...
Page 460: ...IFD500 Series Pilot Guide 7 82 General Bluetooth pairing pairing code ...