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a. Momentarily depress Autopilot Mode Selector, and note that
ST (Stabilizer) light illuminates.
b. Then rotate Mode Selector Knob left then right. Note that
control yokes follow movement of knob.
4. Heading Mode........................................................................TEST
a. Center the HDG bug under the lubber line on the HSI or DG.
b. Momentarily depress Autopilot Mode Selector. Note that HD
(Heading) light illuminates.
c. Then rotate HDG knob on the DG or HSI to the left then right.
Note that control yokes follow movement of knob. Then return
HDG bug to lubber line.
5. Altitude Hold...........................................................................TEST
Maneuvering 10° None
Approach 0° 20 ft
Flight Phase Altitude Loss
Cruise 200 ft
ILS 25 ft
Revision 2: 12-07-04
P/N 11934-S07 5 of 10
Cirrus Design Section 9
SR20 Supplements
a. Depress either pilot’s or copilot’s A/P ALT HOLD button
(control yoke). Note that ALT (Altitude Hold) light illuminates.
b. Depress the A/P ALT HOLD button again and note that ALT
light goes out.
6. Overpower Test:
a. Grasp control yoke and input left and then right aileron to
overpower autopilot. Overpower action should be smooth with
no noise or jerky feel.
7. Radio Check:
a. Turn on NAV1 radio, with a valid NAV signal, and select VLOC
for display on CDI or HSI.
b. Use Autopilot Mode Selector to engage TRK LO mode and
move OBS so that VOR deviation needle moves left or right.
Note that control yokes follow direction of needle movement.
c. Use Autopilot Mode Selector to engage TRK HI mode and
move OBS so that VOR deviation needle moves left or right.
Note that control yokes follow direction of needle movement
with more authority than in TRK LO mode.
8. Autopilot Disconnect Tests:
a. Press and hold Autopilot Mode Selector for approximately 2
seconds. Note that the autopilot disengages. Move control
yoke to confirm that roll control is free with no control
restriction or binding.
b. Momentarily depress Autopilot Mode Selector. Note that
autopilot engages in ST (Stabilizer) mode.
c. Press Pilot A/P DISC/Trim Switch (control yoke). Note that the
autopilot disengages. Move control yoke to confirm that roll
control is free with no control restriction or binding.
d. Repeat steps b. and c. using Copilot Trim Switch.
Revision 2: 12-07-04
6 of 10 P/N 11934-S07
Section 9 Cirrus Design
Supplements SR20
Inflight Procedures
1. RDY Light .....................................................................CHECK ON
2. Trim airplane for existing flight conditions.
3. Center Autopilot Mode Selector Knob and then depress once to
enter ST (Stabilizer) mode.
4. Rotate Autopilot Mode Selector Knob as desired to setup level or
turning flight.
Heading Mode
1. Begin by selecting a heading on the DG or HSI within 10° of the
current airplane heading.
2. Use Autopilot Mode Selector to select HD mode. The HD light will
come on and the airplane will turn toward the selected heading.
3. Use DG or HSI HDG knob to make heading changes as desired.
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. With Autopilot on (ST annunciator on or another roll mode active),
press either the pilot’s or copilot’s A/P ALT HOLD button (control
yoke). 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.
GPS Tracking and GPS Approach
1. Begin with a reliable GPS signal and CDI course needle centered,
with airplane on the suggested heading to the waypoint.
• Note •
Revision 2: 12-07-04
P/N 11934-S07 7 of 10
Cirrus Design Section 9
SR20 Supplements
The airplane must be within 5° of the desired course when
TRK is selected. If airplane is more than 5° off the selected
course the autopilot will turn the airplane towards the course
but may not capture and track it.
2. Use Autopilot Mode Selector to select TRK HI mode for GPS
approach and cross-country tracking.
VOR Tracking and VOR-LOC Approach
1. Begin with a reliable VOR or VOR-LOC signal and CDI course
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Cirrus Design SR20西锐20飞行员操作手册和飞机飞行手册附录(15)
