• 58-2026 US Army # 1906. L-20 No. 907, Command A-16. Delivered 29-Jun-1959. Built as L-20A and re-designated U-6A in 1962.
• 58-2026 Served with US Mapping Mission to Ethiopia. Circa 1962.
• N9746F Civilian registration for US Mapping Mission to Ethiopia Circa. 1962-1963.
Note: N9746F was a bogus registration to cover up the fact that the aircraft was working with the US Military due to local political sensitivities
• 58-2026 Date terminated Aug-1973.