LOUISVILLE, Ky. —

The National Transportation Safety Board has released its preliminary findings from the deadly UPS plane crash in Louisville .

The report contains not-previously released photos of the plane catching fire, a detailed look at the flight path, diagrams of the plane parts and more.

READ THE FULL REPORT HERE

The photo below shows the progression of takeoff when the left engine and pylon separate from the wing and catch fire.

NTSB

Pay particular attention to photos 2, 3 and 4 above.

The report reveals that there were some cracks and failures on the pylon, the part that attaches the engine to the wing.

It also says investigators found "fatigue cracks" (cracks that grow gradually from repeated stresses) in the left pylon aft mount lugs and a fractured aft spherical bea

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