14 of 24 P/N 13772-140
Section 9 Cirrus Design
Supplements SR22 / SR22T
Section 7 - System Description
The airplane is equipped with an S-Tec System Fifty Five X two-axis
autopilot and, if installed, an integrated Flight Director System. The
system consists of the Programmer / Computer, Flight Management
System Keyboard, Turn Coordinator, Altitude Transducer, Integrated
Avionics Unit #2, Pitch Servo, Roll and Pitch Trim Cartridges, Autopilot
Disconnect Switch, Electric Pitch-Trim and Roll-Trim Hat Switch,
Optional Flight Director Switches, and Annunciation System.
The autopilot controls the aircraft pitch, and roll attitudes while
following commands received from the optional Flight Director.
Autopilot operation occurs within the Programmer/Computer installed
in the upper section of the center console and provides:
• Autopilot engagement and annunciation
• Autopilot command and control
• Auto-trim operation
• Manual electric trim
• Two axis airplane control (pitch and roll), including approaches
The optional Flight Director provides pitch and roll commands to the
autopilot system and displays them on the PFD. With the Flight
Director activated, the pilot can hand-fly the aircraft to follow the path
shown by the Command Bars. Flight Director operation takes place
within the #2 Integrated Avionics Unit and provides:
• Mode annunciation
• Vertical reference control
• Pitch and roll command calculation
• Pitch and roll command display
Revision 01: 01-06-10
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