WT CJ4 Elevator Trim (suddenly inop and backwards)

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Are you using Developer Mode or made changes in it?

no

Have you disabled/removed all your mods and addons?

no

Brief description of the issue:

Sudden full Nose Up trim causing plane to stall - event was completely unrecoverable. (See screenshots and descriptions for the anomaly)

Provide Screenshot(s)/video(s) of the issue encountered:

You can see the elevator trim is full Nose Up and stuck there. I checked ALL my control bindings and nothing is/was set to Elevator Trim Up/Down except the keys I’ve always used and the trim would not budge. Even clicking the trim in the VC would show the switch moving but the trim did not move. AP was disconnected.

Here, you can (strangely) see that the Elevator Trim Tab is actually set for full Nose Down position - completely opposite in both indication and behavior.

Detailed steps to reproduce the issue encountered:

PC specs and/or peripheral set up if relevant:

Eclipse Yoke, CH Throttle Quadrant, G510 Keyboard, G604 Mouse.

Build Version # when you first started experiencing this issue:


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Do you have the same issue if you follow the OP’s steps to reproduce it?

Provide extra information to complete the original description of the issue:

If relevant, provide additional screenshots/video:

Do you have the same issue if you follow the OP’s steps to reproduce it?

no

Provide extra information to complete the original description of the issue:

could you provide steps to intent reproducing ?
on your 2nd screenshot (external view), the trim position is correct and corresponds to nose up

If relevant, provide additional screenshots/video:

correct position for trim full nose up

1 Like

Hi @R6point0 ,

Actually this IS the full “Noseup” position of the elevator trim tab.
When the tab is pointing down, like in your screenshot, it will force the elevator (not the aircraft) to move up. Since the elevator is then deflected up, it (the elevator) will cause the airplane to pitch up.
Hope this makes sense to you.