An earlier post suggested a training captain was flying with a pilot under training with around 100 hours. The weather seems to have been good. Maybe he suggested they take the opportunity to fly a circling approach for training purposes, which then went wrong. My experience is mainly on jets so I have no insider knowledge on turboprops. But I have heard people say they can be hard to master and a circling approach is a rarity in an airliner. I was fascinated in any case by the post that suggested the stick pusher in the ATR was not active below 500 feet. Just speculation on my part, which I am sure will be overtaken by the facts.