Frequent Or Persistent Cross Check Attitude Annunciation; Difference Detected Between The Ebd And Mechanical Attitude Indicators - Aspen Avionics Evolution Backup Display EFD1000 Pilot's Manual

6.2. Frequent or Persistent CROSS CHECK
ATTITUDE Annunciation
Refer to alternate attitude, airspeed, altitude, and heading sources for primary flight
information. Consider the following:
CROSS CHECK ATTITUDE
1. Reference standby mechanical attitude indicator – do not rely on the
EBD attitude display.
2. Turn Pitot heat ON.
3. Consider exiting IMC.
4. Land as soon as practicable
For a detailed explanation of when and why the EBD may display a CROSS CHECK
ATTITUDE annunciation, either momentarily or persistently, see Chapter 4, Section 4.1.
Air Data, Attitude and Heading Reference System (ADAHRS).
6.3. Difference Detected Between the EBD and
Mechanical Attitude Indicators
Once diagnosed, ensure the correct attitude source is the only one referenced during
the remainder of the flight.
Compare Alternate Sources of Available Attitude, Airspeed, and Attitude
1. Compare all available sources of attitude, airspeed, and attitude information
to diagnose a faulty indicator.
2. Consider exiting IMC.
3. Land as soon as practicable .
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Evolution Backup Display Pilot's Guide
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