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Stopover: O'Hare International Airport, Chicago, Illinoisĭestination: Philadelphia International Airport, Philadelphia, Pennsylvania Site: Sioux Gateway Airport Sioux City, Iowa, United StatesĬoordinates: 42☂4′29″N 96☂3′02″W AircraftĪircraft type: McDonnell Douglas DC-10-10įlight origin: Stapleton International Airport, Denver, Colorado Summary: Crash-landed following uncontained engine failure and loss of hydraulics

GE learned from this crash to adjust its engine production process to reduce the changes of metal fatigue.United Airlines Flight 232 N1819U, the aircraft involved in the accident, pictured in O'Hare International Airport in August 1984 The NTSB blamed the United Sioux City crash on the airline’s engine overhaul facility for the failure. There was a fatigue crack in the engine fan disk. Eleven children died, including one lap infant and several unaccompanied minors. Sadly the flight had 52 children on board. The rest of the plane started to break apart as well. The right wing hit the runway, spilled fuel, and caught fire. The DC-10 came down fast without flaps or slats. They dumped fuel and managed to make a series of right hand turns, ultimately lining up with the shorter (and permanently closed) runway 22.

They planned to land on runway 31 but lack of control of the aircraft prevented them from lining up for it. When air traffic control told them they were cleared to land, they were told “any runway.” Captain Haynes, somehow mustering gallows humor, replied “You want to be particular and make it a runway, huh?” They declared an emergency and tried to head for Sioux City. The cockpit crew managed the level the aircraft by adjusting power to the remaining engines. There were no procedures for total loss of hydraulics on a DC-10. Debris punctured the plane’s hydraulics and it would not longer respond to controls. The captain had 33 years of experience and over 30,000 flight hours with United.Īt 37,000 feet the tail mounted engine exploded and disintegrated. This 16 year old DC-10 had 43,401 hours and 16,997 cycles under its belt.