When a survivable emergency on a grounded plane turns deadly, investigators examine what caused the disaster.

Exploring the crash of Northwest Airlines Flight 255, a McDonnell Douglas MD-82, immediately after takeoff at Detroit Metro Airport on August 16, 1987.

First ever crash of the Airbus A320 on June 26, 1988 in Habsheim, France. Air France flight 296.

The 1991 collision of two planes mistakenly sharing one runway raises concerns about over-crowded airports and overburdened traffic controllers.

In 1983, Korean Air Lines Flight 007 accidentally enters the Soviet airspace on a flight from the United States to South Korea. The Soviet interceptors shoot down the passenger jet.

See how icy conditions, a communication breakdown, and an airline's focus on the bottom line led to disaster - twice.

A 1992 crash in France's Vosges Mountains is examined, detailing the difficulties in finding the downed plane and then finding reasons for the accident.

A Grumman Mallard seaplane operated by Chalk's Ocean Arways (Flight 101) crashes into the sea shortly after takeoff, becoming the first fatal accident of the operator's 90 years in service.