[JHof]

The Colgan pilot pulled back on the yoke due to the belief that the aircraft had accumulated, and was stalling due to, ice on the tail. A correct response in this case is actually to pull back, rather than lower the nose as in a typical stall.

[lutorm]

Explain. The tail typically flies with negative angle of attack, so it seems like pulling back will require more downforce from the tail, making it more likely to stall.