EFD1000 PFD Pilot’s Guide
Page 7-2 A-01-184-00 REV B
CHAPTER 7, APPENDICES
EFD1000 PFD Pilot’s Guide
EFD1000 PFD Pilot’s Guide
horizontal component of the earth’s magnetic eld is no longer strong enough to
provide reliable heading data, the EFD1000 System will present a “CROSS CHECK
ATTITUDE” annunciation, and will subsequently ag the magnetometer data as invalid,
resulting in the annunciated loss of heading and attitude. Depending on the aircraft
latitude and longitude, this eect could be observed as far away as 750 nm from the
magnetic pole. In the Northern Hemisphere, this equates to operations in the Arctic
Islands found north of continental North America
Use of the EFD1000 system for IFR operations within 750 nautical miles of the Magnetic
Poles, based solely upon the attitude and heading data provided by the EFD1000, is
prohibited.
7.1.4. Placards and Decals
The following electronic placard is provided on the EFD1000 display whenever the RSM
GPS is providing position data for the basemap display:
“RSM GPS REVERSION
EMER USE ONLY”
7.1.5. Seaplane Operation
The EFD1000 system may not be able to align when on water as a function of the
wave action being experienced by the aircraft. When aligning on water, always
perform a visual verication of the attitude reference with a secondary source, such
as a mechanical gyro or the horizon. If the alignment is not successful, it is acceptable
to depart under VFR/VMC and, while maintaining VFR/VMC, perform an AHRS in ight
alignment.