Aspen Avionics Evolution EFD 1000 C3 Pro PFD - Compare Alternate Sources of Available Attitude, Airspeed, and Attitude; Cross Check Attitude; CROSS CHECK ATTITUDE Annunciation; Difference Detected between the PFD and

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091-00019-001 REV B
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091-00019-001 REV B
CHAPTER 6 EXPANDED EMERGENCY AND ABNORMAL PROCEDURES
EFD1000 C3 Pro PFD Pilot’s Guide
6.2. Frequent or Persistent
CROSS CHECK ATTITUDE Annunciation
Refer to alternate attitude, airspeed, altitude, and heading sources for primary ight
information. Consider the following:
CROSS CHECK ATTITUDE
1. Reference standby mechanical attitude indicator
2. Turn Pitot heat ON
3. Consider exiting IMC
4. Land as soon as practicable
For a detailed explanation of when and why the PFD 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 PFD
and Mechanical Attitude Indicators
Once diagnosed, ensure the correct attitude source is the only one referenced during
the remainder of the ight.
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 .