Cirrus DESIGN SR20 Pilot's Operating Handbook And Flight Manual page 315

Cirrus Design
SR20
Section 7 - System Description
This airplane is equipped with a GFC 700 - a two axis, 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, 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 can be divided into two 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 and roll, 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.
P/N 11934-S41
Revision 01: 08-26-09
Section 9
Supplements
7 of 16