High Quality Content by WIKIPEDIA articles! The bombing of Tan Son Nhut Air Base occurred on April 28, 1975, just two days before the Fall of Saigon. The bombing operation was carried out by the Vietnam People`s Air Force (VPAF) Quyet Thang Squadron, using captured Republic of Vietnam Air Force (RVNAF) A-37 aircraft flown by VPAF pilots and RVNAF defectors led by Nguyen Thanh Trung who had bombed the Presidential Palace in Saigon, less than one month earlier.