Before revision: History of development On July 24, 1986, the FAA of United States and NASA signed a memorandum of agreement to formally begin the Airborne Wind-Shear Detection and Avoidance Program (AWDAP).
After revision: In August 1985 windshear and inadequate reactions by the pilots caused the crash of Delta Air Lines Flight 191History of development On July 24, 1986, the FAA of United States and NASA signed a memorandum of agreement to formally begin the Airborne Wind-Shear Detection and Avoidance Program (AWDAP).