Aspen Avionics EVOLUTION EFD1000 PRO MAX PFD - Unusual Conditions and Annunciations; Pitot;Static System Blockage

CHAPTER 5 UNUSUAL CONDITIONS AND ANNUNCIATIONS
EFD1000 PRO MAX PFD Pilot’s Guide
Page 5-1
091-00005-002 ()
Chapter 5
Unusual Conditions and Annunciations
This section provides background information to enhance the pilot’s understanding of
emergency and abnormal conditions. The information supplements the AFMS, which
contains the approved procedures.
5.1 Pitot/Static System Blockage
An obstructed pitot or static system will result in an “Attitude Degraded” message,
where the EFD1000 PRO MAX PFD is using the GPS for attitude aiding. Limit
maneuvering in accordance with the AFMS. Loss of GPS and airspeed will result in loss
of attitude indication.
If the EFD1000 PRO MAX PFD attitude backup is the EFD1000 MAX MFD, both airspeed
and GPS must be operational for flight in IMC.
5.2 Attitude Degraded Mode
The EFD1000 PRO MAX PFD uses airspeed-aiding to support the attitude indication,
and GPS for backup. When the EFD1000 PRO MAX PFD detects a failure of airspeed
(through a GPS groundspeed comparator) the system will automatically revert to GPS
groundspeed-aiding and present the “Attitude Degraded” message. Limit maneuvering
to half standard rate and ±5º in pitch for satisfactory attitude indicator performance.
Exiting IMC is appropriate unless the failed airspeed condition can be cleared.
Figure 5-1
Degraded Mode