Cirrus SR22 Pilot Operating Handbook page 344

Section 9
Supplements
Section 1 - General
This airplane is equipped with an S-TEC System 55X Autopilot. The
System 55X autopilot is a two-axis autopilot system. The system
consists of a flight guidance programmer/computer, altitude encoder,
altitude selector / alerter, turn coordinator, and HSI. Mode selection
and vertical speed selection is made on the programmer/computer
panel. A button on each control yoke handle may be used to
disengage the autopilot. The autopilot makes roll changes through the
aileron trim motor and spring cartridge and makes pitch changes for
altitude hold through the elevator trim motor. The SR22 installation of
the S-Tec System 55X Autopilot features:
• Heading Hold and Command;
• NAV/LOC/GPS/GS tracking, high and low sensitivity, and
automatic 45° course intercept;
• GPS Steering (GPSS);
• Altitude Pre-select, Hold and Command, Altitude display, and
baro correction;
• Altitude and Decision Height (DH) alert; and
• Vertical Speed Hold and Command.
Refer to S-Tec System Fifty-Five X Autopilot Pilot's Operating
Handbook (POH) Serials 0002 thru 0434; P/N 87109 dated 8
November 2000 or later OR Serials 0435 and subsequent; P/N 87247
original release or later, for full operational procedures and description
of implemented modes. The System 55X POH also contains detailed
procedures for accomplishing GPS & VOR course tracking, front
course and back course localizer approaches, and glideslope tracking.
Refer to S-Tec Altitude Selector / Alerter Pilot's Operating Handbook
(POH) P/N 8716 or P/N 87110 (original issue or later) for full
operational procedures and detailed description of operational modes
of the Altitude Selector / Alerter.
The SR22 implementation of the System 55X Autopilot does
not utilize the optional remote annunciator, roll servo, and
optional trim servo. Therefore, all references to these items in
the S-Tec System 55X POH shall be disregarded. Additionally,
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• Note •
Cirrus Design
SR22
P/N 13772-108
Revision 06: 05-09-11