Here’s what flight data tell about plane’s final moments: 5:02 p.m.: UPS Flight 2976 pushes back from a dock at the UPS Worldport near the center of the airport and begins traveling northwest on ramp 5S toward a taxiway. 5:07 p.m.: The cargo jet holds on ramp 5S near a ramp access road.

Determining the cause of the crash will be part of an already-in-progress National Transportation Safety Board investigation.

Airport CCTV security footage showed the left engine “detaching from the wing during the takeoff roll,” according to Inman. The engine seen in photos from near the crash site is believed to be from the left side of the plane, he added.

UPS Flight 2976 crashed moments after departing from Louisville Muhammad Ali International Airport in Kentucky