190-00820-08 Rev. A
Cirrus Perspective
™
by Garmin – Pilot’s Guide for the SR20/SR22/SR22T
431
AUTOMATIC FLIGHT CONTROL SYSTEM
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL
FEA
TURES
APPENDICES
INDEX
SECTION 7 AUTOMATIC FLIGHT CONTROL SYSTEM
NOTE:
The approved Pilot’s Operating Handbook (POH) always supersedes this Pilot’s Guide.
7.1 GFC 700 (OPTIONAL)
The GFC 700 is a digital Automatic Flight Control System (AFCS), fully integrated within the Perspective
™
System avionics architecture. The System Overview section provides a block diagram to support this system
description. GFC 700 AFCS functionality is distributed across the following Line Replaceable Units (LRUs):
• GDU 1240A Primary Flight Display (PFD)
• GDU 1240A Multi-Function Display (MFD)
• GIA 63W Integrated Avionics Units (2 IAUs)
• GMC 705 AFCS Control Unit
•
GSA 80 AFCS Yaw Servo (
optional
)
• GSA 81 AFCS Servos (2)
• GTA 82 Pitch Trim Adapter
• GSM 85 or GSM 86 Servo Gearboxes (3)
The GFC 700 AFCS can be divided into these main operating functions:
•
Flight Director (FD)
— Flight director operation takes place within either GIA 63W. Flight director commands
are displayed on the PFD. The flight director provides:
– Command Bars showing pitch/roll guidance
– Vertical/lateral mode selection and processing
– Autopilot communication
•
Autopilot (AP)
— Autopilot operation occurs within the pitch, roll, yaw, and pitch trim servos. It also provides
servo monitoring and automatic flight control in response to flight director steering commands, Attitude and
Heading Reference System (AHRS) attitude and rate information, and airspeed.
•
Yaw Damper (YD
) — The yaw servo (
optional
) is self-monitoring and provides Dutch roll damping and turn
coordination in response to yaw rate, roll angle, lateral acceleration, and airspeed.
•
Manual Electric Trim (MET)
— The pitch trim adapter provides manual electric pitch trim capability when
the autopilot is not engaged and provides directional trim during climbs and descents.
Summary of Contents for Cirrus Perspective SR20
Page 1: ... Cirrus SR20 SR22 SR22T Integrated Avionics System Pilot s Guide ...
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