hey tdracer
All that being said, I've not seen anything that says the fan blade was uncontained. Clearly the inlet structurally failed, but the why is unclear
.
Suggest you check post by silverstrata
SWA1380 - diversion to KPHL after engine event
for a plausible explanation as to path of missing blade
which would probably be enough to whack a chunk off of cowl/inlet