The list of aircraft accidents and incidents caused by structural failures summarizes notable accidents and incidents such as the 1933 United Airlines Chesterton Crash due to a bombing and a 1964 B-52 test that landed after the vertical stabilizer broke off. Loss of structural integrity during flight can be caused by: * faulty design * faulty maintenance * manufacturing flaws * pilot error * weather conditions * sabotage (e.g., an airliner bombing by a skyjacker).