Originally Posted by
Mitchaa
There’s no specific mention of checking the washer in the SB. Only the nut, the pin and the lock wire.
True enough, the reason I was wondering about the washer is that it is the only thing that might not be obvious if misassembled since a washer is often seen under a nut. Of course that does suggest that if it was suspect it would have been mentioned in the AD.
Most likely is that they suspect a fault in the feedback link but may not know exactly what at this stage.
Hard to fathom how pin and lockwire could be missed on assembly so might be a failure.
Here is one scenario: If the lockwire was incorrectly installed could it eventually wear into the locking pin, possibly on the head side?
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