Flight Instruments; Primary Flight Display - Serials 0435 And Subsequent - Cirrus SR22 Pilot Operating Handbook

Cirrus Design
SR22

Flight Instruments

For additional information on instrument limit markings, refer
to Section 2, Limitations.

Primary Flight Display - Serials 0435 and Subsequent

The Primary Flight Display (PFD) provides the functions of the attitude
indicator, heading indicator, airspeed indicator, altimeter, vertical
speed indicator, directional gyro, course deviation indicator, and
altitude pre-select controller onto a single electronic display. In
addition, the PFD communicates with GPS1, GPS2, NAV1, NAV2, the
Multifunction Display, and Autopilot System.
An integral air data/attitude and heading reference system (ADAHRS)
uses a 3-axis solid state gyro and accelerometer system combined
with a magnetometer to replace the vertical and directional gyros.
ADAHRS also provides roll, pitch, heading data and continually
updates the winds aloft and true airspeed (TAS) indications on the
PFD. The magnetometer assembly mounted in the wing also provides
outside air temperature (OAT) data.
The airplane's Pitot-Static system is connected to the PFD to provide
airspeed, altitude, and vertical speed.
Standby instruments for airspeed, attitude and altitude are mounted on
the LH bolster panel and are on separate power sources than the PFD.
Redundant power sources provide 28 VDC for system operation.
Power is supplied through the 10-amp PFD1 circuit breaker on the
Essential Bus and the 10-amp PFD2 circuit breaker on Main Bus 2.
Either circuit is capable of powering the PFD. System start-up is
automatic once power is applied. The display presents the Initialization
Display immediately after power is applied. Power-on default is 75%
brightness. Typical alignment times are 3 minutes from battery turn on.
P/N 13772-001
Revision A5
• Note •
Section 7
Airplane Description
7-21