• 54-1689 US Army #1532. L-20 No. 533 Command A-6. Delivered 28-Jun-1955. Built as L-20A and re-designated U-6A in 1962.
• L-201 Air America, Vientiane, Laos. 01-Mar-1962 to Apr-1963.
Air America Service history: Arrived at Bangkok in crates on 15-Feb-1962, assembled by Thai Airways according to contract no. BKK 62-001 It was operated under the Madriver Contract AF62(531)-1674. It was officially received at Bangkok on 01-Mar-Mar-1962 and based at Vientiane, but maintained at Udorn. It was to be returned to the US Army in Oct-1962 but eventually returned on 21-Apr-1963.
• 54-1689 US Army. Returned to service 21-Apr-1963.