C-21 aircraft crashes at Decatur, Ill. airport Published Oct. 3, 2006 SCOTT AIR FORCE BASE, Ill -- An Air Force Flight Standards Agency C-21 crashed at approximately 11:30 a.m. today at the Decatur, Ill. airport. The aircraft, based out of Will Rogers Air Guard Station in Oklahoma City, was performing touch-and-go training at the airport. The two pilots on board the aircraft are being held at a local hospital for observation. Emergency crews, both civilian and military, responded to the scene to contain the situation. A board of officers will investigate the accident.