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Old 09-26-2021, 03:57 PM
F1R F1R is offline
Join Date: Nov 2010
Location: ____
Posts: 911
Default One more thing to look at.

Have a very very close look at the torque tube right beside the weld where the actuator arm / bellcrank joins the torque tube.

It is rare but I have seen a virtually undetectable crack in the torque tube adjacent to the outside of the weld bead. This allows the torque tube to act as a torsion spring, where the actuator can operate normally , with various amounts of flap displacement.

I was absolutely convinced I had an actuator/ wiring/ switch issue and it took a few frustrated sessions of trouble shooting to find the actual problem on the underside(not easy to get a look at)of the torque tube.

Good Luck

Last edited by F1R : 09-26-2021 at 04:12 PM.
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