When a cargo plane test flight ends in disaster, investigators uncover a series of failures that doomed the DC-8 before it got off the ground.

Friday, February 1, 1991: as US Air 1493 lands at LAX, it collides with another plane and bursts into flames. Passengers struggle to escape the inferno, but encounter a line at one of the few usable exits. Twenty-one passengers never made it out - investigators must find out why. Interviews with survivors paint a harrowing picture of the obstacles, misunderstandings and confrontations.