Originally Posted By: JLTD
"Uncontained failure" is the industry term. It's supposed to stay inside the engine's titanium (or other metals) shroud.
Sounds like the crew handled things well, landed quickly and safely. There will be an investigation into the engine and why it became uncontained...
I was about to say that as well - it looks like there is an uncontained failure, the fan case did let go. We can't speculate but the CFM56-7B engine used on the 737NG does use a titanium fan(the new LEAP engine on the MAX is carbon fiber like the GE90/NX). I wonder if one of the fan blades broke loose from the hub and had enough inertia to be hurled through the window? 2nd engine failure for WN in the last year too, there has to be root cause - either shoddy maintenance practice or something isn't caught at a shop visit.
And in an modern airliner, should the inner window pane be enough to hold together in the event of a outer window failure or the rapid decompression event that happened is enough to rip the Lexan inner pane from the fuselage as well?