When a stealth bomber crashes at a US Air Force base as a result of bad data, it becomes the most expensive aviation disaster ever.

A crew argues - with no runway in sight. A captain ignores a critical signal. And, an exhausted pilot picks a catastrophic time to try a new approach.

Investigators hunt for answers when the pilots of three aircraft skip protocols, ignore their training, and crash.

Three shocking catastrophes show the threat bad weather poses to landings. Martinair flight 495 faces more than torrential rain and ends up crashing on the runway in Portugal.

Pushed to the limit, three flight crews in jeopardy overcome impossible odds to land their aircraft. The pilots of a Boeing 707 lose both right engines while flying over the French Alps and the plane slowly starts to catch fire.

Pitch problems, or the incorrect position of the aeroplane nose, lead to catastrophic impacts that leave little evidence behind. This episode features three such disasters that left investigators stumped.