CHAPTER 6, EMERGENCY AND ABNORMAL PROCEDURES
EFD1000 PFD Pilot’s Guide
EFD1000 PFD Pilot’s Guide Page 6-1A-01-184-00 REV B
Chapter 6
Emergency and Abnormal Procedures
6.1. In Flight AHRS Reset
In the unlikely event the EFD1000 PFD determines a potential degradation of attitude
information, a warning annunciation, CROSS CHECK ATTITUDE, displays above the
aircraft reference symbol (Figure 6-1). If the attitude pitch or roll data become invalid, a
red “X” and the textual annunciation of “ATTITUDE FAIL” display on the Attitude Indicator
and all aircraft roll, pitch, and slip information is removed from the Attitude Indicator
display (Figure 6-2). Use alternate, mechanical, ight instruments and reset the AHRS
as soon as possible.
NOTE
When the EFD1000 AHRS is reset in ight, it performs an abbreviated
initialization.
During the initialization, the aircraft should not be subjected to excessive
turn rates. Typical in-ight initialization will take approximately 30
seconds, but can take longer if the reset is initiated while banked or
maneuvering.
The AHRS reset is considered complete when the EFD1000 attitude and
heading is once again displayed, stable, and correct with respect to the
horizon or standby indicator.
Figure 6-1
Attitude Degraded Performance
Figure 6-2 Attitude Failure
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