Air Crash Investigation - Mayday: Season 20 ( Disaster in the Air )

A Pakistani airliner crashes in the Himalayas. And when their most vital piece of evidence fails to deliver, investigators scramble to find answers.

A cargo jet plummets to earth in the Swedish Arctic. And as investigators pore over the evidence, a terrifying picture of chaos and confusion emerges.

After a routine landing, a Taiwanese commuter plane is rocked by a massive explosion, but investigators find no evidence of a bomb on board.

Blanketed by confusion and heavy fog, a DC-9 ends up at the wrong end of an active runway in Detroit, and directly in the path of an oncoming 727.

Landing on a Caribbean island in a severe thunder storm, a Colombian airliner crashes short of the runway. Investigators need to find out why.

Investigators are stumped when a turboprop slams into an Argentine desert, and it's a microscopic filament that provides the first tangible clue.

A helicopter carrying offshore oil workers crashes into the ocean off the coast of Newfoundland and a far-reaching investigation reveals a fatal flaw.

Investigators are stumped when a turboprop crashes into an Indonesian mountaintop.

When an African airliner mysteriously crashes, Namibian investigators rule out a host of possible causes before reaching a chilling conclusion.

A brand-new 737 falls from the sky over West Africa during a major storm, but investigators eventually discover weather had nothing to do with it.