Lomapaseo, Fendant,
Just for my education really, I was under the impression that the engine fuse pins (I guess Boeing-only given your comments) were also designed to shear in flight in the event of a catastrophic engine failure, mainly the onset of seizure of one or more of the shafts. Such an event, even as it developed, would start to transfer rotational energy/momentum from the shaft(s) to the engine casing and the pins were designed to let go before the twist went back up the pylon and into the spars. Nothing to do with this situation – just interested as the question of the pins has been raised!
End of Thread creep!
