I no longer fly, but maybe this will spur anon's memory.
Reposting for the workfags. Low cycle fatigue of a fan blade below expected LCF life limits. It happens.
https:// www.ntsb.gov/news/press-releases/Pages/PR20160912.aspx
Look at the blood on the windows aft of the missing one.
I think we're sliding here, anons. Occam's razor.