• 57-6151 US Army # 1815. L-20 No. 816. Command A-13. Delivered 21-Jul-1958. Built as L-20A and re- designated U-6A in 1962. Converted to RU-6A configuration in 1962
• 57-6151 Operated with 3rd RRU (Radio Research Unit) at Da Nang, Vietnam. Named “Slow Poke”.
Accident: 14-Jan-1965. Crashed after engine failure, 32 miles N/W of Tan Son Nhut, Vietnam.
• 57-6151 For sale at Coleman Barracks, Mannheim-Sandhofen, Germany. Feb-1973.
• No regn Purchased by B & M Aviation, Lachute, ON. 01-Apr-1973. Sold in 1976.
• No regn Reportedly sold to Nipawin Air Services Ltd., Nipawin, SK. (Presumably for spares reduction.)