US Airways 1549? Yukla 27 set the precedent, flying through flock of ducks (or were they geese?) and knocking out both engines is not quite an improbable situation
Agree.
However, in any product caused accident the exact combinations of all causal factors should be thought to be improbable beforehand.
In this accident there may be a surprise ingredient not recognized beforehand. (other example would be the BA038)