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5. Autopilot Tests
a. Heading Mode .................................................................TEST
1.) Center the HDG bug under the lubber line on the HSI.
2.) Momentarily press HDG button on autopilot Mode
Selector. Note that HDG light illuminates.
3.) Then rotate HDG knob on the HSI to the left then right.
Note that control yokes follow movement of knob. Then
return HDG bug to lubber line.
b. Vertical Speed .................................................................TEST
1.) Press VS button on autopilot programmer/computer. Note
that VS light illuminates VS+0.
2.) Rotate the VS control knob to 500 FPM up (+5). After a
short delay, the control yoke will move aft.
3.) Rotate the VS control knob to 500 FPM down (-5). After a
short delay, the control yoke will move forward.
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Supplements SR22
c. Altitude Hold ....................................................................TEST
1.) Depress ALT button on autopilot programmer/computer.
Note that ALT annunciator comes on, VS annunciator
goes out, and yoke does not move.
d. Overpower Test:
1.) Grasp control yoke and input left aileron, right aileron,
nose up, and nose down to overpower autopilot.
Overpower action should be smooth in each direction with
no noise or jerky feel.
e. Radio Check:
1.) Turn on NAV1 radio, with a valid NAV signal, and select
VLOC for display on the HSI.
2.) Use autopilot programmer/computer to engage NAV
mode and move OBS so that VOR deviation needle
moves left or right. Note that control yokes follow direction
of needle movement.
f. Autopilot Disconnect Tests:
1.) Press Pilot A/P DISC/Trim Switch (control yoke). Note that
the autopilot disengages. Move control yoke to confirm
that pitch and roll control is free with no control restriction
or binding.
2.) Repeat step using Copilot A/P DISC/Trim Switch.
In-Flight Procedures
1. Autopilot RDY Light ......................................................CHECK ON
2. Trim airplane for existing flight conditions.
3. Engage desired mode by pressing mode selector button on
autopilot programmer/computer.
Heading Mode
1. Begin by selecting a heading on HSI within 10° of the current
airplane heading.
2. Press HDG button on autopilot programmer/computer. The HDG
annunciator will illuminate and the airplane will turn to the selected
heading.
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Cirrus Design Section 9
SR22 Supplements
3. Use HSI HDG bug to make heading changes as desired.
Autopilot Altitude Hold Mode
1. Manually fly the airplane to the desired altitude and level off.
• Note •
For smoothest transition to altitude hold, the airplane rate of
climb or descent should be less than 100 FPM when Altitude
Hold is selected.
2. Press HDG or NAV to engage a roll mode. The associated
annunciator will illuminate.
• Note •
A roll mode must be engaged prior to engaging a pitch mode.
3. Press the ALT button on the autopilot programmer/computer. The
ALT annunciator will illuminate indicating that the mode is
engaged and the autopilot will hold the present altitude.
• Note •
Manually flying the airplane off the selected altitude will not
disengage altitude hold and the autopilot will command a pitch
change to recapture the altitude when the control input is
released.
4. Altitude can be synchronized to another altitude by rotating the VS
knob on the programmer/computer. Clockwise rotation will
increase and counterclockwise rotation will decrease altitude 20
feet for each ‘click.’ The maximum adjustment is ±360 feet.
Adjustments greater than 360 feet can be made by selecting VS
mode and flying the airplane to the new altitude and then reengaging
ALT mode.
Autopilot Vertical Speed Mode
1. Begin by manually establishing the desired vertical speed.
2. Press HDG or NAV to engage a roll mode. The associated
annunciator will illuminate.
• Note •
A roll mode must be engaged prior to engaging a pitch mode.
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Supplements SR22
3. Press the VS button on the autopilot programmer/computer to
engage the vertical speed mode. When the mode is engaged, the
autopilot will synchronize to and hold the vertical speed at the time
the mode was engaged.
• Note •
The vertical speed is displayed in 100-foot increments at the
far right of the programmer/computer window next to the VS
　
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