United Airlines Flight 232 was a DC-10 (registered N1819U) that on July 19, 1989 crash-landed in Sioux City, Iowa after suffering catastrophic failure of its tail-mounted engine, which led to the loss of all flight controls.
The flight was en route from Stapleton International Airport in Denver, Colorado to O’Hare International Airport in Chicago. Of the 296 people on board, 111 died in the accident and 185 survived. Despite the deaths, the accident is considered a prime example of successful crew resource management due to the large number of survivors and the manner in which the flight crew handled the emergency and landed the airplane without conventional control. The flight crew became well known as a result of their actions, in particular the captain, Alfred C. Haynes, and a DC-10 instructor on board who offered his assistance, Dennis E. Fitch.