Originally Posted by
Checkboard
Two instances I can think of - one a 737 at Amsterdam and one a Thompson at Manchester. For both, the pilots were distracted with very low thrust set and the trim rolled nose up due to the dropping airspeed. Then a Go-around is initiated and the autopilot disconnected.
As the trim is more powerful than the stab, the aircraft pitches up, beyond the ability of the elevator to correct it - i.e., full foward on the controls and still pitching up. Now if the autopilot had been kept in, the trim would be running forward, but in manual flight the startle can mean that the pilots don't think to apply the forward trim needed.
In my experience, there are very few pilots who when faced with an ever increasing nose up change of trim, remember to roll the aircraft to the nearest horizon to get the nose to drop to regain lost speed.