German investigators are stumped when two planes collide while flying in the skies over southern Germany.

On 31 October 1999, EgyptAir Flight 990, from New York to Cairo, Egypt, dives out of the sky and crashes into the ocean, killing all 217 people on board. The cause of the crash is disputed: the Egyptian government claims mechanical failure associated with the elevator controls caused the crash, but the US government claims the aircraft was deliberately crashed by the Relief First Officer Gameel Al-Batouti in a suicide/homicide.

On 4 April 1977, Southern Airways Flight 242, a flight from Huntsville, Alabama, to Atlanta, Georgia, flies through a severe thunderstorm and is hit by large hailstones. Both engines of the DC-9-31 fail, and the aircraft makes an emergency landing on a highway in New Hope, Paulding County, Georgia. However, it collides with a gas station and explodes, killing 62 people on board and eight on the ground. Two more die later of injuries sustained during the crash.

On 19 July 1989, the tail-mounted number two engine of United Airlines Flight 232 explodes, causing serious damage to the aircraft's hydraulic systems and leaving the flight controls unusable. By varying engine thrust, the pilots manage to crash-land the aircraft at the Sioux Gateway Airport in Iowa, saving the lives of 185 of the 296 people on board. The investigation traced the engine failure to a fatigue crack in the front fan disk which had developed from a defect introduced before the disk was even made, when the original titanium ingot used to make it was formed.

On June 10, 1990, the cockpit window blows out on British Airways Flight 5390, partially ejecting and injuring the captain through the hole. A member of the cabin crew clings to his legs as the co-pilot completes an emergency landing without any fatality. The captain is found to be still alive after being outside the cockpit for 21 minutes.

On 1 July 2002, Bashkirian Airlines Flight 2937 collides with DHL Flight 611 in German airspace near Überlingen. Flight 2937 is destroyed instantly, and the DHL cargo aircraft crashes shortly afterwards, killing all 71 people on board the two aircraft.

On 14 August 2005, air traffic controllers lose radio contact with Helios Airways Flight 522. Two fighters from the Hellenic Air Force intercept and investigate the flight and find all but one person on board not moving. A few moments later, the aircraft runs out of fuel and crashes, killing all 121 people on board. An incorrect setting on the cabin pressurization panel caused the pilots and everyone else on board to succumb to hypoxia.

On 17 January 2008, British Airways Flight 38 is on its final approach to land, when the autothrottles command increased thrust from the engines. The engines do not respond to the control inputs and remain at idle. The captain raises one notch of flaps to give the aircraft a few more feet of flying distance; it crash-lands just short of the runway without causing any fatalities. The fuel flow to both engines was restricted because of ice crystals causing a blockage in the fuel-oil heat exchangers.

On 15 January 2009, US Airways Flight 1549 suffers a bird strike with a flock of Canada geese approximately 1.5 minutes after taking off from LaGuardia Airport in New York City. Both engines fail, and less than two minutes later, the crew members successfully ditch the aircraft in the Hudson River. All on board survive.

On 24 May 1988, TACA Airlines Flight 110, a near-new Boeing 737, flies through a thunderstorm and suffers a dual engine flameout. The captain, Carlos Dardano, manages to make a successful deadstick landing on a narrow grass levee in the Michoud area of eastern New Orleans.

On 24 March 2015, Germanwings Flight 9525 enters a high-speed descent and crashes into the French Alps during a flight from Barcelona, Spain, to Düsseldorf, Germany. All 150 people on board are killed.

Rocked by an explosion that rips both right wing engines off the wing, the pilots of Transair 671 manage a miraculous landing at a French military airfield.

On 24 June 1982, British Airways Flight 9 experiences St. Elmo's fire en route from Kuala Lumpur, Malaysia, to Perth, Australia. A few minutes later, all four engines flame out. After descending, the crew successfully restarts the engines and lands safely. The St. Elmo's fire and engine flame-outs were caused by volcanic ash spewed by Galunggung in Indonesia during a major eruption.

On 6 July 2013, on landing at San Francisco International Airport, Asiana Airlines Flight 214 strikes a seawall and crashes short of the runway. Of the 307 people on board, 2 passengers die at the crash scene; another dies shortly after in hospital.

On 12 August 1985, the rear pressure bulkhead bursts on a Boeing 747SR operating as Japan Airlines Flight 123, destroying the vertical stabilizer and severing all four of the aircraft's hydraulic systems. The crew manages to keep the aircraft flying for 32 minutes until it clips Mount Osutaka and crashes, killing all but four people out of the 524 passengers and crew aboard.

On 23 March 1994, Aeroflot Flight 593 is en route to Hong Kong, when it stalls and crashes, killing all 75 people on board. The pilot's 15-year-old son accidentally disabled the autopilot while in the captain's seat, causing the aircraft to bank heavily to the right, inducing the stall.

On 3 March 1991, a Boeing 737 operating as United Airlines Flight 585 is on approach to land, when it suddenly rolls into a dive and crashes within eight seconds, killing all 25 people on board. On 8 September 1994, USAir Flight 427 is another Boeing 737 on approach to land, when it rolls and crashes within thirty seconds, killing all 132 people on board. On 9 June 1996, Eastwind Airlines Flight 517 is another Boeing 737 that unexpectedly rolls in similar circumstances, but the crew successfully regains control of the aircraft and lands safely. The cause of all three incidents was the rudder experiencing a "hardover" (suddenly going to full deflection) and jamming due to thermal shock of the hydraulic control valve.

On 1 June 2009, Air France Flight 447, a scheduled flight from Rio de Janeiro to Paris, stalls and crashes into the Atlantic Ocean while flying through a thunderstorm, killing all 216 passengers and 12 crew members on board. The causes of the crash were incorrect airspeed readings due to ice blockage of the aircraft's pitot tubes, inappropriate control inputs and the pilots not taking recovery action until it was too late.

On 27 March 1977, the deadliest-ever aviation accident occurs at Los Rodeos Airport (now known as Tenerife-North Airport) in the Canary Islands. KLM Flight 4805 and Pan Am Flight 1736 collide on the runway in thick fog during the KLM aircraft's attempt to take off, killing 583 people.

On 16 January 2002, on final approach to Yogyakarta at the end of a routine domestic flight from Ampenan, Garuda Indonesia Flight 421 suffers a double engine flameout while flying through a severe thunderstorm and ditches in the Bengawan Solo River. 59 of the 60 people on board survive.

On 19 February 1985, China Airlines Flight 006's number four (right-side outer) engine flames out. As the crew tries to restart the engine, the Boeing 747SP stalls and enters into a spin. The crew successfully regains control, restarts the engine and lands safely at San Francisco International Airport. The incident was caused by pilot error. Alternate title: "6 Mile Plunge"

On 12 June 1972, a McDonnell Douglas DC-10, just a few months old, operating as American Airlines Flight 96 from Detroit, Michigan, to Buffalo, New York, suffers an explosive decompression after a cargo door in the lower rear fuselage bursts open. The crew makes an emergency landing at Detroit without any loss of life. Two years later, on 3 March 1974, Turkish Airlines Flight 981 suffers a similar sequence of events during a flight from Paris to London. This time, the DC-10's hydraulic systems are damaged enough that the crew loses control, and the aircraft crashes in a forest near Senlis outside Paris, killing all 346 on board. At the time, it was the worst aviation disaster in history. A design fault with the cargo door mechanism was not rectified after the first accident, and the second DC-10's door opened during flight, causing the crash.

Find out what went wrong when a Kazakhstan Airlines jet and a Saudi Airways plane collided in the worst mid-air crash in aviation history, killing 349 people on November 12, 1996.

On 9 October 2002, Northwest Airlines Flight 85 is cruising above the Bering Sea, when the lower rudder segment suddenly deflects to the left. The pilots divert the aircraft to a successful emergency landing at Anchorage, Alaska, by using engine thrust for control. The incident was attributed to a fatigue failure of the rudder hydraulic control module, resulting in part of the module's metal casing breaking off.

On 4 November 2010, Qantas Flight 32, en route to Sydney Airport in Australia, suffers an uncontained engine failure in its number two engine and serious damage to its left wing shortly after takeoff from Singapore. The crew members overcome a number of resulting failures and make a safe emergency landing back at Singapore with no injuries among the 469 passengers and crew members. Investigators found that a manufacturing fault in an oil pipe caused the engine failure.