The images are part of the National Transportation Safety Board's preliminary report, released Nov. 20.

The images are part of the National Transportation Safety Board's preliminary report, released Nov. 20.

Worn connecting hardware likely caused the left engine to detach from a UPS cargo plane that crashed in Louisville, Ky., the NTSB said.

The deadly 4 November plane crash killed over a dozen people and left dozens more injured.

Frame by frame, six photos released by federal investigators capture horrifying images of ill-fated Flight 2976 as it turned into a fireball along a Kentucky airport runway.