• 59-2213 United States Army. Delivered 08-Jan-1960. Designated U-1A.
Initially assigned to the Sharpe Army Depot, Stockton, CA., as a depot support aircraft.
Feb-1970 Arrived in Vietnam with the 388th Transportation Company, Vung Tau.
Mar-1970 18th Aviation Company until unit disbanded, Mar-1971.
Mar-1971 In storage with the 388th Transportation Company, Vung Tau.
Jul-1971 Deleted from Army inventory.
• 0-92213 (Unconfirmed). Government of Cambodia for the Khmer Air Force under a Military Aid programme. Aug-1971.
Incident: Pochentong 21-Mar-1972. Probably one of the four Otters that were damaged during the 21 March 1972 Khmer Rouge rocket attack. It languished at the location as un-flyable and beyond economical repair by June-1973.