From
post 138 of this thread
My initial read suggest to me that this failure mode mentioned in the AD only affects a failure to respond to a commanded input rather than forces an unwanted input.
still puzzled
No reason to be puzzled lomapaseo; the elevator was simply responding to a necessary autopilot commanded input necessitated by the aircraft suddenly entering the fairly flat gradient pressure-change (significant, but
not a jet-stream and involving no CAT) that was overlying the NW Cape and adjacent waters - at that time.