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

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 January31, 2000, Alaska Airlines Flight 261's trimmable horizontal stabilizer jams and breaks free from its control system. The aircraft dives inverted into the Pacific Ocean, causing the death of all 88 on board.

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 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 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.

(Northwest Airlines Flights 299 & 1482) When a blanket of confusion and heavy fog puts two planes on a path to disaster, investigators wonder if it was the pilots themselves creating chaos.

On 12 February 2009, Colgan Air Flight 3407 stalls at low altitude and dives into a residential area near Buffalo, New York. All on board and one person on the ground are killed. Several critical errors made by the flight crew might have been the result of their fatigue.

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 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.

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 22 December 1999, Korean Air Cargo Flight 8509, en route from London Stansted Airport to Milan, Italy, crashes into a field about 55 seconds after taking off, killing all four crew members on board. The causes of the crash were the captain following the indications of a malfunctioning attitude indicator and lack of communication amongst the crew members.

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 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.

With flames emerging through the cockpit floor, the pilots of Pilgrim Airlines 458 manage a heroic landing on a frozen Rhode Island reservoir.

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 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 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.

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 28 April 1988, Aloha Airlines Flight 243 is en route from Hilo to Honolulu in Hawaii, when the upper half of the front fuselage is torn off, blowing out a flight attendant. The aircraft subsequently lands safely at Kahului, Maui. The fuselage failed from corrosion damage and metal fatigue.

On 19 January 1995, the crew of Bristow Flight 56C is forced to perform an emergency autorotation to a ditching in the sea, after lightning damages the tail rotor of their helicopter. Despite the rough sea conditions, the 16 oil rig workers and pilots are rescued by nearby ships.

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 31 August 1986, Aeroméxico Flight 498, a McDonnell Douglas DC-9, and a light aircraft collide over Cerritos, California, causing both to go out of control and crash, killing 82 people. The accident was caused by neither pilot making visual contact with the other aircraft and a lack of automated collision warning systems. The crash inspires the creation of the traffic collision avoidance system.

On 10 February 2011, Manx2 Flight 7100 crashes at Cork Airport in Ireland after the pilots lose control of the aircraft in an attempted go-around in low visibility. Six of the twelve people on board are killed in the crash.