• 59-2203 United States Army. Delivered 10-Sep-1959. Designated as U-1A.Aviation Company, Fort Riley, KS.
Unknown date. Aircraft not sent to Vietnam, taken over by the 1063rd Aviation Company, a unit of the Iowa National Guard, based at Waterloo, IA.
Oct-1961. 1063rd Aviation Company moved to Fort Riley, KS.
Jul-1962 Remained at Fort Riley as an operational support aircraft.
Feb-1966. To Vietnam to join the 54th Aviation Company. Named “Big Daddy 203”.
Incident. During Operation Cedar Falls, Vietnam. Jan-1967. Received infantry hits during a radio relay operation.
Incident: South of Saigon Feb-1967 Engine failure. Landed safely without damage or injury to occupants.
Incident: Near Duc Hoa, Vietnam. Mar-1967. Engine failure. Landed safely without damage or injury to occupants.
1968 & 1969. With the 54th Aviation Company based at Rach Gia until disbanded in Jan-1971.
Jan-1971. 56th Transportation Company for storage.
Feb-1971. 388th Transportation Company, Vung Tau. Stored until Jul -1971 after which it was scrapped.