Cessna L-19 or O-1 Bird Dog, Army / Air Force Serial No. 51-16963, c/n 22840, Model 305A, was assigned to a National Guard unit. Following 4,706 hours of military flying, it left the military service. Transferred to US Forestry Department in North Carolina as N9623Q (Aircraft #7) in May 1973. It flew to the Fort Worth Aviation Museum and remains the only aircraft that has flown to the museum under its own power.