Garmin SA01456Wi_D Manual download pdf (Page 117)

G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air Page 4-33

190-00682-01 Revision F

4.12 Trim Annunciator Check

This procedure will check the trim annunciation from both GIA 1 and GIA 2.

1. Ensure the G1000 is in normal mode, the autopilot is not engaged, and the GMC 710 XFR

key is selected to the pilot’s side.

2. Press the left part of the pilot’s pitch-trim switch upwards for approximately 10 seconds and

verify that the red PTRM annunciation is displayed on both PFD 1 and PFD 2. Release the

switch and wait for the PTRM annunciation to clear.

3. Press the left part of the pilot’s pitch-trim switch downwards for approximately 10 seconds

and verify that the red PTRM annunciation is displayed on both PFD 1 and PFD 2. Release

the switch and wait for the PTRM annunciation to clear.

4. Repeat Steps 2 and 3 for the right part of the pilot’s pitch-trim switch.

5. Repeat Steps 2 through 4 for the copilot’s pitch-trim switch.

6. Select copilot side by pressing the XFR key on the GMC 710 (changes active GIA to GIA

2).

7. Repeat Steps 2 through 5 and verify annunciations are displayed on both PFD 1 and PFD 2.

8. Re-select pilot side by pressing XFR key on the GMC 710 (changes active GIA back to

GIA 1).

9. Move the control yoke to the center position and hold and center the pitch trim wheel.

10. Press the Go Around switch on the throttle, then engage the autopilot and apply a forward

load on the control yoke. Verify that the pitch trim wheel rotates in the nose up direction.

11. Disconnect the autopilot by pressing the AP DISC button.

12. Use the pitch-trim switch (or the pitch-trim wheel) to trim full nose down.

13. Move the control yoke to the full forward position and hold.

14. Engage the autopilot, maintain the control yoke in the forward position and keep the pitch-

trim wheel from rotating for approximately five seconds. Quickly release the trim wheel

and verify that the red PTRM annunciator is displayed on both PFD 1 and PFD 2.

15. Disengage the autopilot and use the pitch-trim switch (or the pitch-trim wheel) to trim full

up.

16. Move the control yoke to the full forward position and hold.

17. Engage the autopilot, apply firm aft pressure on the control yoke for approximately 15

seconds, allowing the pitch-trim wheel to move freely. Verify that the amber ELE ↓

annunciator is displayed on both PFD 1 and PFD 2.

18. Disengage the autopilot and use the pitch-trim switch (or the pitch-trim wheel) to trim full

down.

19.

Move the control yoke to the full aft position and hold.

20. Engage the autopilot, apply firm forward pressure on the control yoke for approximately 15

seconds, allowing the pitch-trim wheel to move freely. Verify that the amber ELE ↑

annunciator is displayed on both PFD 1 and PFD 2.

21. Disengage the autopilot and rotate the control yoke to the full left position and hold.

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Garmin SA01456Wi_D Manual Page 117