Discover the surprising reason why a Boeing 737 took a deadly nosedive after circling the runway for two hours.

All signs point to bad weather causing the crash of Martinair Flight 495... until investigators make an intriguing discovery.

An emergency over the French Alps leads to a miraculous landing, followed by the discovery of a small but deadly flaw.

Heroic flying isn't enough to overcome neglectful maintenance in the tragic accident of Alaska Airlines Flight 261.

Investigators must pull off a risky test flight to see if the pilots of a heroic emergency landing are hiding a secret.

When a tree-strike takes out both engines of an MD-83, the crew must find a way to land a 60-ton plane with no power.

When an Illinois turboprop crashes after losing battery power, investigators uncover a series of errors made by the pilots.

When a turboprop stalls and crashes into a North Carolina forest, investigators resort to a risky test flight-and uncover an industry-wide safety problem.

When basketball legend Kobe Bryant is killed in a helicopter crash in Calabasas, investigators examine the data, the wreckage, and the pilot's actions for clues.