The aircraft involved in the accident was a McDonnell Douglas DC-10-10 registered as N110AA. N110AA, the aircraft involved in the accident, photographed at O'Hare five years prior The engine separation was attributed to damage to the pylon structure holding the engine to the wing, caused by improper maintenance procedures at American Airlines. The disrupted and unbalanced aerodynamics of the aircraft caused it to roll abruptly to the left until it was partially inverted, reaching a bank angle of 112°, before crashing in an open field by a trailer park near the end of the runway. As the aircraft began to climb, the damaged left wing-with no engine-produced far less lift than the right wing, which had its slats still deployed and its engine providing full takeoff thrust. Aerodynamic forces acting on the wing resulted in an uncommanded retraction of the outboard slats. As the engine separated from the aircraft, it severed hydraulic fluid lines that lock the wing's leading-edge slats in place and damaged a 3-foot (0.9 m) section of the left wing's leading edge. The National Transportation Safety Board (NTSB) found that, as the aircraft was beginning its takeoff rotation, engine number one (the left engine) separated from the left wing, flipping over the top of the wing and landing on the runway. With 273 fatalities, it is the deadliest aviation accident to have occurred in the United States. All 258 passengers and 13 crew on board were killed, along with two people on the ground.
On the afternoon of May 25, 1979, the McDonnell Douglas DC-10-10 operating this flight was taking off from runway 32R at O'Hare when its left engine detached from the wing, causing a loss of control, and the aircraft crashed less than one mile (1.6 km) from the end of the runway. Loss of control caused by engine detachment and hydraulic failure, due to improper maintenance Ĥ2☀′35″N 87★5′45″W / 42.00972°N 87.92917°W / 42.00972 -87.92917 ( accident site) Īmerican Airlines Flight 191 was a regularly scheduled domestic passenger flight in the United States from O'Hare International Airport in Chicago, Illinois to Los Angeles International Airport in California.
Flight 191 after takeoff, missing its left engine and leaking fuel and hydraulic fluid
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