... I would contend that damage is much more likely from turbine blade release which, since they're very hot, would pose a very strong risk to tank damage and thus fire. In addition (esp on a twin) the turbine is ususally in line with the tank...not the fan.
Two incidents that spring to mind are Manchester and the recent AA 767 that let go during a ground run causing a hull write off...
Neither Manchester nor LAX AA767 were turbine
blade failures, which are relatively innocuous (contained failure) under certification rules.
Manchester was a combustor case failure, resulting from a burner can or nozzle failure, with a burnthrough of the 200 psi pressure vessel.
The LAX failure was a HPT
disk failure - disk segments of over 100 lb. released to cannonball their way through primary structure. Potentially the worst failure mode of all, and one that turbine designers work VERY hard to avoid. (Even so, I'm not so sure the 767 hull was a writeoff - but I could be wrong.)
What I'm curious to know is how the FCMC 'senses' that it has a 'rotor burst' situation?
An excellent question!