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

The chilling sequence first shows an engine coming loose from the UPS cargo plane during takeoff. The engine pops off the plane as fire erupts in the next image, followed by the blazing engine catapulting off the stricken plane. The final images show the plane ablaze as it gets airborne, leaving behind trails of smoke.

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This combination photo provided by the National Transportation Safety Board (NTSB) via UPS shows a sequence of framegrabs made from video where an engine is seen detaching from the plane's left w

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