• 56-0401 US Army # 1721. L-20 No. 722. Command A-11. Delivered 12-Sep-1957. Built as L-20A and re-designated U-6A in 1962.
• 56-0401 Oklahoma ANG. Dates unknown.
• 56-0401 Stored at MASDC., Davis Monthan AFB., AZ. 09-Feb-1972 to 26-Feb-1976. PCN (Product Control Number) HS088. As this is a USAF code presumably transferred to the USAF inventory.
• N9821F Owner unknown, Chesterfield, MS. Dates unknown.
• N68013 Owner operator unknown. Canx 12-Apr-1976.
• C-GUJI Imported into Canada. Regd 18-Apr-1976.
• C-GUJI Air Saguenay Inc., Chicoutimi, QC. Regd prior to Certificate of Airworthiness renewal dated 20-May-1977.
• tt 14,2771.1 SMOH 1,254.4 27-Aug-1993.
• C-GUJI Air Saguenay (1980) Inc., Jonquière, QC. Regd 27-Mar-1981, 23-May-2003 and 02-Sep-2003. Based Lac Sebastien.
• C-GUJI Ahmic Air Ltd., Pitt Meadows, BC. Regd 10-Aug-2016. Based Yellowknife, YT.