jcjeant
but something
on the plane make it departed again
That something was full nose up trim with the aircraft in direct law.
That was the point of the A-4 Skyhawk recovery procedure 13 posts before this.
The aircraft was recovered to straight and level flight at 138 knots(from memory) but as it continued to accelerate the aircraft began to promptly pitch up, finally getting up to 57 degrees (also from memory). The pitch up was rather quick. The aircraft never regained auto trim although it switched to alternate law on gear retraction.
If the A-4 procedure is relevant to this event, which I suspect it is, the way to recover from this pitch up would have been to immediately reduce power and to slow the aircraft down promptly to prevent the nose from being driven higher. (Imagine doing this just after stalling your aircraft and recovering!) The intent of the procedure would be to gain time to understand what was happening. The trigger for such a procedure would be a pitch up related to aircraft acceleration.
I am fairly confident you do not have such a procedure in FCOM. And I'll wager that if we were to ask a group of Airbus drivers if they needed such a procedure, the answer would be negative.
