Cirrus DESIGN SR22 Pilot Operating Handbook page 400

Section 9
Supplements
Section 7 - System Description
This airplane is equipped with a GFC 700 - a two axis (three axis
optional), fully digital, dual channel, fail passive Automatic Flight
Control System (AFCS). The system consists of the GFC 705 AFCS
Mode Controller, Flight Management System Keyboard, Roll Servo,
Pitch Servo, Yaw Servo (optional), Integrated Avionics Units, Pitch
Trim Adapter, Autopilot Disconnect Switch, Take Off / Go Around
Button, Electric Pitch-Trim and Roll-Trim Hat Switch. The GFC 700
AFCS with optional Yaw Damper can be divided into three primary
operating functions:
Flight Director - The Flight Director provides pitch and roll commands
to the AFCS 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 #1 Integrated Avionics Unit and provides:
• Mode annunciation
• Vertical reference control
• Pitch and roll command calculation
• Pitch and roll command display
Autopilot - The Autopilot controls the aircraft pitch, roll, and if installed,
yaw attitudes, while following commands received from the Flight
Director. Autopilot operation occurs within the trim servos 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
• Level (LVL) mode engagement command of zero roll and zero
vertical speed.
Optional Yaw Damper - Yaw Damper operation is provided by the yaw
servo and supplies:
• Yaw Damper engagement and annunciation
• Yaw axis airplane control
14 of 30
Cirrus Design
SR22 / SR22T
P/N 13772-135
Revision 03: 12-14-10