F ederal regulators on Thursday released an initial report about the United Parcel Service cargo plane crash that killed 14 people in Kentucky, leading investors to dump shares of GE Aerospace and Boeing, which had merged with the cargo jet’s maker nearly 30 years ago.

The National Transportation Safety Board unveiled new details describing a stunning frame-by-frame images showing the left engine separating from the plane and going up and over the wing, after the fiery crash of a UPS plane in Louisville killed 14 people earlier this month and left a half-mile long debris field.

The plane crashed to the ground, tearing a hole through the roof of a UPS warehouse before exploding in a fireball at the airport

The MD-11 cargo jet flown by UPS that crashed Tuesday had been sidelined for six weeks before the deadly incident, according to federal investigators.