S18 E10: A cleaning crew makes a careless error while cleaning a 757, affecting the plane's computer system and causing it to crash into the Pacific Ocean.
Catastrophic incidents in aviation history are meticulously re-enacted, providing insight into what went wrong and if the crashes and near-disasters could have been prevented. Accounts from survivors combine with cockpit recordings and computer images to weave the gripping tales, and expert testimony reveals the hows and whys behind the events, some of which have resulted in important changes to aviation safety and regulations.