Garmin Software Version 0857.09 Instruction Manual download pdf (Page 76)

Page 8-10 G1000 System Maintenance Manual - Hawker Beechcraft G58

Revision 3 190-01180-02

checked. If an alert is heard, the audio interface between GIA No. 2 and the

audio panel should be checked.

8.3.2 AFCS SWITCH CHECKS

To verify that the AFCS system buttons and switches are operating correctly, perform the

following checks:

a. Actuate both halves of the Manual Electric Trim (MET) switch in the same direction.

The trim clutch should engage and the trim wheel should run in the selected

direction. Check operation in both directions.

b. Press the AP DISC button and hold while actuating the MET switch. The trim wheel

should stop running.

c. Release the AP DISC button. The trim wheel should resume running.

d. Release the MET switch.

e. Engage the Autopilot by pressing the AP key on the MFD.

f. Press and hold the left half of the MET switch. The Autopilot should command a

normal disengagement and the trim wheel should stop moving and rotate freely

when moved manually. A disconnect tone will be heard and a flashing amber “AP”

will be visible on the PFD.

g. Engage the Autopilot again by pressing the AP key on the MFD. The pitch and roll

clutches should engage, resisting movement of the control wheel.

h. Press and hold the CWS switch. The control wheel should now move freely when

moved manually.

i. Release the CWS switch. The Autopilot should hold the control wheel in its present

attitude.

j. Press the AP DISC switch. The Autopilot should command a normal disengagement.

A disconnect tone will be heard and a flashing amber “AP” will be visible on the PFD.

k. Verify that the control yoke is free in pitch and roll axes.

l. Engage the Autopilot again by pressing the ‘AP’ key on the MFD.

m. Pull the AP SERVOS circuit breaker. The Autopilot should command an abnormal

disconnect, consisting of a continuous disconnect tone and flashing red ‘AP’ and

amber ‘YD’ annunciation. No AFCS annunciations (e.g. AFCS, PFT, Mistrim) should

remain on the PFD.

n. Reset the AP SERVOS breaker and then press the AP DISC switch to silence the

autopilot abnormal disconnect tone.

o. Wait for the pre-flight test sequence to successfully complete again.

p. Press the GO AROUND button. ‘GA’ should be annunciated on the PFD for both

pitch and roll modes and the command bars should indicate a wings-level climb to 7

degrees.

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Garmin Software Version 0857.09 Instruction Manual Page 76