Investigators try to determine why Independent Air Flight 1851 was flying below advised altitude when it struck a mountain on the Portuguese island of Santa Maria, killing everyone on board.

Minutes after takeoff, Japan Airlines Flight 123 experiences a sudden loss of pressurization and crashes into a mountain northwest of Tokyo, prompting investigators to look for answers.

An investigation into the crash of Airlines PNG Flight 1600 on Papua New Guinea reveals a potentially deadly flaw in the popular Bombardier Dash 8 turboprop plane.

Equipment and software oversights on Air Astana Flight 1388 cause a critical malfunction immediately after takeoff, forcing the crew to attempt a series of near-impossible landings.

When a plane's windshield shatters over the Himalayas, the pilots are forced to make a rapid emergency landing while battling freezing winds and dangerously low oxygen.

When a British tycoon and his family die in a 2017 Australian seaplane crash, investigators spend over two years searching for the reason behind the tragedy.

The plan to save Balkan Bulgarian Airlines Flight 013 hinges on convincing the violent hijackers that their demands have been met before the plane runs out of fuel.

When an Amazon cargo plane nosedives into a swamp outside Houston, the evidence eventually leads investigators to a pilot with a long history of failures.

Evidence from the disappearance of EgyptAir Flight 804 leads investigators to theorize different causes for the plane's spiral into the Mediterranean.