Pilot’s Operating Handbook Section 901
EXTRA 500 Avidyne IFDs and CDU
systems or settings. Invalid xxx messages generally indicate a
failed sensor and that other messages associated with that
system will be unavailable. Caution messages indicate the
possibility of a pilot action.
901.4 Section 4 – Normal Procedures
901.4.a Switching ON/OFF
Both IFDs are automatically switched on when battery power is
available. For the RH IFD the AVIONICS switch must be ON
and/or the load bus powered. The Load bus is powered with
external power or starter-generator online.
IFDs may be switched off by pulling the following circuit
breakers:
LH IFD:
IFD-LH-A (EMERGENCY BUS) and
IFD-LH-B (BATTERY BUS)
RH IFD: IFD-RH-A (AVIONICS BUS) and
IFD-RH-B (LOAD BUS)
901.4.b B-RNAV Operation
For B-RNAV operation the following shall be performed:
A pre-flight GPS RAIM prediction for the flight plan. Dispatch
should not be made in the event of predicted continuous loss of
RAIM of more than 5 minutes for any part of the intended
flight.
A NAV database validity check (SYS Æ setup)
Select NAV frequencies for cross-check purposes along the
flight plan.
901.5 Section 5 – Performance
No change from basic Handbook.
901.6 Section 6 – Weight and Balance
No change from basic Handbook. See POH for current weight
and balance for this aircraft.
26. January 2011
901-7
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