• 55-4586 US Army #1624. L-20 No. 625. Command A-9. Delivered 27-Dec-1956. Built as L-20A and re-designated U-6A in 1962.
• 966 Hukbong Himpapawid NG., Philippinas / Philippine Air Force under Foreign Military Assistance Scheme (FMAS).
• RP-739 Re-serialed with pseudo civilian registration to Hukbong Himpapawid NG., Philippinas / Philippine Air Force.
• RP-C739 Manuel P. Cortez, Paranaque, Manila, Philippines. Regd 1988. Canx 1989.