On a high-stakes demonstration flight in Indonesia, a Russian-made Sukhoi Superjet slams into a mountain killing everyone on board.

With the future of commercial space travel hanging in the balance, it's up to investigators to figure out what went wrong.

En route from Singapore to Perth, Qantas Airways Flight 72 takes a sudden nosedive over the Indian Ocean.

Alitalia Flight 404 plows into a forested hillside killing everyone. Did a hidden flaw in the navigation system lead two pilots down a deadly path?

It will take more digging and hard evidence to understand what doomed the crew of Emery Worldwide Flight 17.

Just minutes from touching down, China Airlines Flight 140 falls out of the sky at Japan's Nagoya Airport.

After circling above the Taiwan Strait to wait out a passing cyclone, TransAsia Flight 222 crashes on the Taiwanese resort island of Penghu.

En route to Salt Lake City, Delta Airlines Flight 1141 crashes just moments after lifting off from Dallas-Fort Worth airport and erupts into flames.

Investigators are determined to get answers for the families of Malaysia Airlines Flight MH17 victims, but face political roadblocks at every turn.

En route to Boise, Idaho, Continental Airlines Flight 1713 barely lifts off the ground before its banks sharply and crashes.