• 53-8163 USAF # 1388. L-20 No. 389. Command A(AF)5. Delivered 26-May-1954. Built as L-20A and re-designated U-6A in 1962. Full history still to be researched.
• N5151G Possibly Civil Air Patrol, Maxwell AFB., AL. Dates currently unknown.
• N5151G Richard B. Folsom, Greenville, ME. Regd 30-Dec 1975. Cancelled 19-Apr-1976 on export to Canada.
Note: Gap in history.
• C-GFRD Club César Air Services Inc., Ville Brossard, Lac César, QC. Regd date 29-Aug-1983. Canx Oct-1992.
Accident: Lac César, QC. 24-Sep-1993. While departing for Clova a gust of wind tipped the aircraft to the left and the left wing struck the top of a tree. Aircraft later went to the maintenance hangar. CADORS report 1993Q0515
• C-GFRD Club César (1993) Inc., St. Hilaire, QC. Regd 30-Nov-1994.Canx 11-Sep-2002
• C-GFRD Club César (1993) Inc., St. Hilaire, QC and Les Placements J S G P Inc., Laval-Des-Rapides, QC. Based at Mascouche, QC. Regd and canx on same day 11-Apr-2003.
• C-GFRD Les Placements J S G P Inc., Laval-des-Rapides, QC. Regd 11-Apr-2003. Based Mascouche, QC. Canx 07-Sep-2006.
• C-GFRD Pierre d’Andre, St. Basile-le-Grand, QC. Regd 07-Sep-2006. Canx 07-Feb-2011.
• C-GFRD Rock Martel, Repentigny, QC. Based Joliette, QC. Regd 14-Feb-2011.
• C-GFRD RK Air, Repentigny, QC. Based St. Michel-des-Saints. Regd 23-Oct-2013.