The Mysterious Disappearance of United Airlines Flight 718 | Mayday: Air Disaster

Published at : 17 Dec 2025

In 1956, United Airlines Flight 718 departs Los Angeles with 53 passengers in an era where air travel is a luxury. There's no radar coverage, so planes report waypoints for tracking. As Flight 718 progresses normally, it suddenly vanishes after missing a radio checkpoint at the Painted Desert Line. TWA Flight 2 also disappears at the same checkpoint. Controllers' frantic efforts lead to a tragic discovery: both planes have crashed in the Grand Canyon.

What led to the mysterious disappearance and fatal crash of United Airlines Flight 718 and TWA Flight 2 in the Grand Canyon in 1956?

Mayday: Air Disaster - From Season 12 episode 6 "Grand Canyon Disaster": United Airlines Flight 718 – DC-7
TWA Flight 2 – L-1049 Super Constellation
In 1956, a mid-air collision sends two planes crashing into the Grand Canyon killing all 128
passengers and crew on board. Armed only with the rudimentary tools of the time,
investigators from the Federal Civil Aviation Board must determine what caused the crash.
Their conclusions will uncover a frightening problem that threatens the safety of the entire
aviation system.

Experts analyse various plane crashes with the aim to figure out how these disasters occurred. They also shed light on how such accidents shaped the aviation industry and improved safety standards.

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