Garmin G1000 System Maintenance Manual page 299

8.2.5
Autopilot Operation Checks
1. Engage the Autopilot by pressing the AP key on the AFCS mode controller. Push the HDG knob to
synchronize the heading bug to the current aircraft heading. Select HDG mode by pressing the HDG
key on the AFCS mode controller. Verify the command bars are level and the control wheel is
stationary. (There may be some roll motion in the yoke if the aircraft not perfectly level.)
2. Turn the HDG knob to the left and right and check that the command bars move in the correct
direction and the control wheel follows the command bars.
3. Push and hold the CWS button and pull the control wheel to the center of the pitch control range.
Release the CWS button. Verify the autopilot clutches re-engage and hold the wheel stationary.
4. Holding the control wheel lightly, rotate the NOSE UP/DN wheel on the AFCS mode controller two
clicks UP to increase the pitch reference. Verify the command bars move up 1 degree and the control
wheel begins moving aft. (In some aircraft, the down spring may require manual assistance to get aft
control stick movement).
5. While holding the control wheel firmly, press and hold the CWS button to re-synchronize the pitch
reference. Re-center the control wheel to wings level and mid-range elevator travel. Release the
CWS button and check that servo clutches re-engage before releasing the control wheel.
6. Rotate the NOSE UP/DN wheel on the AFCS mode controller two clicks DOWN to decrease the
pitch reference. Verify the command bars move down 1 degree and the control wheel begins moving
forward. Hold the controls and press CWS to re-center the command bars and stop control wheel
movement.
7. With the Autopilot still engaged and the CWS button pressed, move the control wheel to its aft limit.
Release the CWS button and apply continuous forward pressure, slowly moving the control wheel.
After a brief delay, verify the trim wheel begins moving in a trim up direction.
8. Grip the control wheel and press the CWS button. Verify trim motion stops. Move the control wheel
to the forward limit and release the CWS button. Slowly move the control wheel aft. After a brief
delay, verify the trim wheel begins to trim down. Relieve pressure on the wheel and verify the trim
motion stops. Check that the trim wheel is free to turn. Hold the control wheel and press the AP/YD
DISC TRIM INTRPT switch to disconnect the autopilot.
G1000 / GFC 700 System Maintenance Manual - 300/B300 Series King Air
190-00716-01
Page 8-13
Revision 1