Dynon Avionics EFIS-D10A Pilots Users Guide - Manual (Page 13)

Product Overview
GPS Pitot Static AOA Magnetometers Rate Sensors Accelerometers
Ball X
Altitude X
Airspeed X X
AOA X X X
Turn Rate X* X X X X
Heading X* X X X X X
Attitude X* X* X X X
ATTITUDE CALCULATION
The EFIS-D10A artificial horizon display (attitude) is generated via a
Your EFIS attitude is not reliant on any single external system. It
can provide an accurate attitude - even in the event of airspeed loss
(due to icing or other blockage) - via a redundant GPS aiding source.
In normal operation the instrument uses airspeed to provide superior
attitude accuracy. If a problem develops with your airspeed reading
a properly connected and configured GPS source acts as a substitute. When in this mode the instrument continues to
provide accurate attitude. complex algorithm using a multitude of sensors.
,
*If a GPS is present upon the loss of airspeed, the EFIS-D10A uses the GPS ground speed in its attitude calculation.
When in this mode, a magenta GPS ASSIST message is displayed over the horizon and the ground speed is displayed
below the IAS indicator (as shown at right). If the connectivity with the GPS fails while in
GPS assist mode, the attitude continues to be displayed, using the last known GPS ground
speed as a reference. This mode is flagged on the horizon with a yellow CROSS CHECK
ATTITUDE message. In the very rare case that this sequence of event occurs, the EFIS-
D10A’s attitude accuracy is reduced; use other references in the aircraft to cross-check against
2-4 EFIS-D10A Pilot’s User Guide