
The flight took off at 14:09 (CDT) from Stapleton International Airport, Denver, Colorado, bound for O'Hare International Airport in Chicago, Illinois with ongoing service to Philadelphia International Airport in Philadelphia, Pennsylvania. The disaster is considered an example of successful Crew Resource Management, due to the effective use of all the resources available aboard the plane for help during the emergency.

Owing to the skill of the crew and a DC-10 instructor pilot, who was a passenger on the aircraft, 174 passengers and 10 crew members survived the crash.

The aircraft broke up during an emergency landing on the runway at Sioux City, Iowa, killing 110 of its 285 passengers and one of the 11 crew members. The hydraulic fluid from each system was rapidly dissipated, and that resulted in no flight controls working except the thrust levers for the two remaining engines.

Shrapnel was hurled from that engine with enough force to penetrate the hydraulic lines of all three of the aircraft's hydraulic systems. On July 19, 1989, the Douglas DC-10 (Registration N1819U) suffered an uncontained failure of its number 2 engine. United Airlines flight 232 was a scheduled flight from Stapleton International Airport, in Denver, Colorado, to O'Hare International Airport in Chicago, Illinois, and then would continue on to Philadelphia International Airport in Philadelphia, Pennsylvania.
