Cirrus DESIGN SR20 Information Manual page 325

Cirrus Design
SR20
6. Overpower Test:
a. 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.
7. Radio Check:
a. Turn on NAV1 radio, with a valid NAV signal, and select VLOC
for display on the HSI.
b. 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.
8. Autopilot Disconnect Tests:
a. 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.
b. 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.
3. Use HSI HDG bug to make heading changes as desired.
P/N 11934-S13
Revision 04: 08-15-07
Section 9
Supplements
9 of 16