Airliners frequently make emergency landings , and almost all of them are uneventful . However , because of their inherent uncertain nature , they can quickly become crash landings or worse . Some notable instances include United Airlines Flight 232 , which broke up while landing at Sioux City , Iowa , United States on July 19 , 1989 ; and Air Canada Flight 797 , which burned after landing at Cincinnati/Northern Kentucky International Airport on June 2 , 1983 after a fire started in the cabin
United Airlines Flight 232
United Airlines Flight 232
Emergency landing