[pfflier]

There’s a video supposedly showing it on fire at takeoff??

Looks to be in the center engine. Maybe a compressor stall??

[janetjanet998]

Video shows crash of UPS Flight 2976 while taking off from Louisville International Airport in Kentucky
https://rumble.com/v718fmo-video-shows-crash-of-ups-flight-2976-while-taking-off-from-louisville-inter.html

[pfflier]

I'm backing off on the compressor stall theory. The flames are too sustained. Now looks like a catastrophic centerline engine fire.

In the L-1011 the engine is embedded in the rear fuselage in the tail empennage.