American Airlines Flight 77 slams into the Pentagon on America's darkest day of the 21st century. TWA Flight 800 explodes over Long Island minutes after leaving JFK. The supersonic superstar Concorde crashes into an airport hotel after a failed takeoff from Paris. All three air disasters made headline news around the globe, creating media frenzies, igniting conspiracy theories, and putting immense pressure on investigators. In this episode, we revisit these three accidents and follow examiners as they uncover the truth behind the tragedies.

While commercial pilots undergo hundreds of hours of training and testing, even experienced pilots can make deadly rookie errors.

When an aircraft loses total engine power, a pilot's training can make all the difference in the world.

Three mysterious accidents send investigators hunting for clues. In the end, all three trails lead back to the same source - the fuel tank.

Three planes fatally out of balance force investigators to question every calculation. It's a flight risk that's entirely preventable, and yet repeated disasters reconfirm the need for critical backup systems.

If pilots aren't prepared when the runway is in sight, a landing can quickly become a tragedy.

Spatial disorientation is one of the leading causes of all air accidents. Even the most experienced pilots are susceptible to its subtle yet deadly effects.

Radio silence between pilots and air traffic controllers can mean many different things, but only the physical evidence can reveal the true story. Three shocking cases send investigators hunting for answers.

When former race car driver Niki Lauda's planes nosedives into a Thai jungle, a one-in-a-million failure reveals a weak spot in every Boeing 767.

Dashcam footage aids in the investigation of a fatal TransAsia crash, experts determine the cause of a botched emergency landing, and a test flight for a revolutionary aircraft turns deadly.

A Boeing 737 vanishes off the radar, a South Korean jet slams into the English countryside moments after takeoff, and an inexperienced crew faces a pileup of errors on a flight over Russia. When critical instruments cause confusion, the consequences can be deadly.

Airplane crashes involving high-profile passengers—including a top diplomat and a Brazilian football team—put investigators under intense pressure to come up with answers.

Traced to a breakdown of vital safety measures, three horrific disasters provoke fundamental changes to airport security procedures around the world.

Following three deadly crashes, investigators uncover dangerous mathematical flaws in the very operations systems designed to prevent aircraft from flying into mountains.

From the wreckage of three airplane crashes, survivors emerge to tell harrowing tales and provide critical data about what to do in an emergency.

Mid-air tragedies are particularly horrifying when they occur over a community, and rain terror on the people below.

Devastating failures in the air put pilots to the test, and shine a light on three astonishing feats of flying.