The power had just gone off and the ground was shaking at Grade A Auto Parts when the owner received a hysterical video call from his chief financial officer.

Federal investigators looking into the deadly UPS cargo plane crash in Kentucky will closely examine the aircraft's maintenance records and data recorder after finding that one of its engines fell off during takeoff.

Dramatic video shows the moment a UPS plane bursts into a massive fireball as it was taking off from Louisville airport in Kentucky. (Credit: AP)

Video of the deadly Louisville, Kentucky, crash showed flames on one of the plane's wings and a huge fireball erupting as the aircraft hit the ground.

The NTSB said it believes the left engine from a UPS plane that crashed earlier this week fell from the wing during takeoff in Louisville. A worker from Grade A Recycling, one of several local businesses in the aircraft's impact zone,

A team of investigators arrived in Louisville, Kentucky, Wednesday to look into what led to the fiery crash of a UPS cargo plane shortly after it took off from the Louisville airport Tuesday, killing at least 12 people and destroying businesses and other structures in the area.

There was a fire in the UPS plane's left wing and the engine "detached" during takeoff from Louisville International Airport in Kentucky, the NTSB official said.

The crash of a UPS plane in Louisville, Ky., has disrupted the shipper's air cargo headquarters, delaying some deliveries.

At least 12 people were killed and several others injured after a UPS plane crashed shortly after taking off from the Louisville International Airport on Tuesday.

A UPS plane crashed shortly after takeoff from Louisville airport on Tuesday, triggering a massive fire and killing at least nine.

Just hours before a plane crash at a Louisville airport that has now left a dozen dead and nearly 20 injured, a UPS pilot from Northwest Arkansas had flown in.