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9. Flight Director
10. Yaw Damper (optional)
11. Pitch Wheel
12. Indicated Airspeed Hold
13. Altitude Hold
14. Vertical Speed Mode
15. Vertical Navigation Mode
2
5
SR22_FM09_2921
FMS Keyboard and GFC 705 AFCS Mode Controller
Revision 01: 08-26-09
P/N 13772-135 13 of 16
Cirrus Design Section 9
SR22 Supplements
Roll, Pitch and Optional Yaw Servo
The Roll Servo, located below the passenger seat, the Pitch Servo,
located below the baggage compartment, and the optional Yaw Servo,
located in the empennage avionics bay, position the aircraft flight
controls in response to commands generated by the Integrated
Avionics Units autopilot calculations.
28 VDC for Roll and Pitch Servo operation is supplied through the 5-
amp AP SERVOS circuit breaker on MAIN BUS 1.
28 VDC for Yaw Servo operation is supplied through the 3-amp AP
YAW SERVO circuit breaker on MAIN BUS 3.
Integrated Avionics Units
The Integrated Avionics Units located behind the MFD and instrument
panel, function as the main communication hubs to the Avionics
System and GFC 700, linking the systems to the PFD and MFD
displays. Each Integrated Avionics Unit receives air and attitude data
parameters from the Air Data Computer and Attitude and Heading
Reference System. Each Integrated Avionics Unit contains a GPS
WAAS receiver, VHF COM/NAV/GS receivers, and system integration
microprocessors. The AFCS function within the Integrated Avionics
Units control the active and armed modes for the Flight Director, as
well as autopilot engagement. The Flight Director commands for the
active modes are calculated and sent to the PFD for display and mode
annunciation. The sensor data and Flight Director commands are also
sent to the servos over a common serial data bus.
28 VDC for Integrated Avionics Unit 1 operation is supplied through
the 7.5-amp COM 1 and 5-amp GPS NAV1 circuit breakers on the
ESS BUS 1. 28 VDC for Integrated Avionics Unit 2 operation is
supplied through the 7.5-amp COM 2 and 5-amp GPS NAV2 circuit
breakers on the MAIN BUS 2.
Revision 01: 08-26-09
14 of 16 P/N 13772-135
Section 9 Cirrus Design
Supplements SR22
Autopilot Disconnect Switch
The yoke mounted Autopilot Disconnect Switch disengages the
autopilot and may also be used to mute the aural alert associated with
an AP disconnect.
Take Off / Go Around Button
The remote TO/GA switch, located on the left side of the power lever,
disengages the autopilot and selects the Takeoff or Go Around mode
on the Flight Director. When the aircraft is on the ground, pressing the
TO/GA switch engages the Flight Director command bars in Takeoff
mode. When the aircraft is in the air, pressing the TO/GA switch
engages the Flight Director command bars in Go Around mode.
Pressing the TO/GA switch will disengage the autopilot and cancel all
armed modes except ALT ARM (ALTS). After TO/GA engagement,
other roll modes may be selected and subsequent autopilot
engagement is allowed. However, an attempt to modify the pitch
attitude with the Pitch Wheel will result in a reversion to PIT mode.
Additionally, if in Approach mode, pressing the TO/GA switch resumes
automatic sequencing of waypoints by deactivating the “SUSP” mode.
Pitch Trim Adapter
The Pitch Trim Adapter, located below the passenger seat, takes input
from the trim switches, Integrated Avionics Units, and the pitch servos
to allow the GFC 700 to drive the pitch trim cartridge.
28 VDC for Pitch Trim Adapter operation is supplied through the 2-amp
PITCH TRIM circuit breaker on Main Bus #1.
Electric Pitch/Roll-Trim Hat Switch
The yoke mounted Electric Pitch Trim and Roll Trim Hat Switch allows
the pilot to manually adjust aircraft trim when the autopilot is not
engaged.
Revision 01: 08-26-09
P/N 13772-135 15 of 16
Cirrus Design Section 9
SR22 Supplements
Annunciation System
• Note •
Refer to the Cirrus Perspective Pilot’s Guide for a detailed
description of the annunciator system and all warnings,
cautions and advisories.
Crew Alerting System
AFCS alerts are displayed in the Crew Alerting System (CAS) window
located to the right of the altimeter and VSI. AFCS annunciations are
grouped by criticality and sorted by order of appearance with the most
recent message on top. The color of the message text is based on its
urgency and required action:
• Warning (red) – Immediate crew awareness and action required.
• Caution (yellow) – Immediate crew awareness and future
corrective action required.
• Advisory (white) – Crew awareness required and subsequent
　
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