The airport remained operational as a training and maintenance facility for American , Braniff and Delta , who used GSW 's ILS facilities for pilot training . It was also used for general aviation and aircraft storage . During this period , on May 30 , 1972 , Delta Air Lines Flight 9570 crashed at Greater Southwest International Airport while performing " touch and go " training landings . The National Transportation Safety Board determined that wake turbulence from another training flight , an American Airlines McDonnell Douglas DC-10 , had caused the Delta Douglas DC-9-10 to lose control as it neared touchdown . As this was a training flight , only four people were on board flight 9570 at the time of the crash : three crew and an FAA operations inspector . All were killed
Delta Air Lines Flight 9570
Delta Air Lines Flight 9570
Greater Southwest International Airport