Originally Posted by
tdracer
Repeating myself here, but not wanting to force people to read (or re-read) all 60+ pages:
There is a picture posted (many pages back) of the CFM56-5 gearbox installation - at the six o'clock position on the fan case. Given the force of the cowling impacts on the runway, it's highly likely the gearbox casing fractured (it's a large casting, so relatively brittle in impact). This would have resulting in a very rapid loss of nearly all the engine oil. The gearbox apparently didn't fail catastrophically - that would have failed the engine driven fuel pump which would have caused the engine to quit almost immediately.
I'm not gonna pick a horse here without a factual report. But like I said earlier there are other possibilities associated with a lighter squash that gets the fan blade tips, et.c etc.
Easy tto see by looking at the blade tips for burning and blueing (highspeed extreme rubbing and its secondary effects, melted turbine blades).
So far no facts to support other than 1x eyeball of grainy pix