C
HAPTER
22-10: GFC 700 A
UTOMATED
F
LIGHT
C
ONTROL
S
YSTEM
CIRRUS A
IRPLANE
M
AINTENANCE
M
ANUAL
G
ENERAL
MODELS SR22
AND
SR22T
2
operating controls for the autopilot are located on the mode controller/keyboard. The auto-
pilot disconnect and 4-way trim switches provide input to disconnect/override autopilot
guidance.
The GFC 700 AFCS 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 GIA 63W Integrated Avionics Units and provides:
•
Mode annunciation
•
Vertical reference control
•
Pitch and roll command calculation
•
Pitch and roll command display
Autopilot - The Autopilot controls the pitch, roll, and (if installed) yaw attitudes, while
following commands received from the Flight Director. Autopilot operation occurs within
the 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
Yaw Damper (optional) - The yaw damper reduces dutch roll tendencies and coordinates
turns. It operates independently of the autopilot and may be used during normal
hand-flight maneuvers. A GSA 80 servo provides the control surface interface and the mode
selection occurs via the GMC 707 controller. Yaw Damper operation is provided by the yaw
servo and supplies:
•
Yaw damper engagement and annunciation
•
Yaw axis airplane control
For an overview of the MFD/PFD, see Display Systems section of Indicating and Recording.
For an overview of the ADAHRS, see Flight Environmental Systems section of Navigation
And Pitot-Static Systems.
For an overview of the FMS keyboard, see Flight Management Computing section of Navi-
gation And Pitot-Static Systems.
For an overview of the GIA 63W Integrated Avionics Computer, see Central Computers
section of Navigation And Pitot-Static Systems.
23 Dec 2016
