• 54-1722 US Army #1565. L-20 No. 566. Command A-6. Delivered 09-Mar-1956. Built as L-20A and re-designated U-6A in 1962.
• 54-1722 Stored at MASDC., Davis Monthan AFB., AZ. 07-Apr-1972 to 08-Mar-1976. PCN (Product Control Number) HS156. As this is a USAF code presumably transferred to the USAF inventory. Wearing Arctic colour scheme
• N9253Z Karen K. Graves / Graves Aircraft Co., Yukon. OK. Regd 08-Mar-1976.
Note: Purchased by Graves at the Davis Monthan auction sale on 29-Jan-1976.for $23,000US. Purchased on the basis of "no reasonable potential for normal certification”. Total time 5,585.3 hours. Engine hrs unknown. Comment at time of auction: old struts, white paint scheme, four seats, and average condition.
• C-GPVB Imported into Canada. Regd Oct-1976.
• C-GPVB Centralia Aircraft, Orangeville, ON. Dates currently unknown.
• C-GPVB Pelley Enterprises Ltd., Springdale. NL. Regd prior to Certificate of Airworthiness renewal dated 04-Oct-1977. Canx date currently unknown.
• C-GPVB Wentzell’s Flying Service, Corner Brook, NL. Regd prior to Certificate of Airworthiness renewal dated 04-Oct-1977. Canx prior to Cert of Airworthiness renewal dated 04-Oct-1978.
• C-GPVB Straits Air Ltd., Springdale, NL. Regd prior to Certificate of Airworthiness renewal dated 04-Oct-1978. Canx date currently unknown.
• C-GPVB Dougan Logging Ltd., Sayward, BC. Based at Campbell River, BC. Regd 05-Dec-1979. Canx 18-Oct-1989.
• C-GPVB Orca Air (1987) Ltd., Port McNeill, BC. Regd 18-Oct-1989. Canx 21-Mar-1991.
• C-GPVB Gynn Bay logging Ltd., (Western Straits Air), Campbell River, BC. Regd 21-Mar-1991. Canx 27-Jun-1994.
• C-GPVB Orca Air (1987) Port McNeill, BC. Regd 27-Jun-1994. Canx 06-Mar-1995.
• C-GPVB 444316 B C Ltd., (Air Rainbow Mid Coast) Port McNeill, BC. Regd 22-Mar-1995. Canx 03-Jun-1996.
• C-GPVB Inland Air Charters, Prince Rupert, BC. Regd 19-Aug-1996.
• C-GPVB Leased to South Moresby Air Charters, Queen Charlotte City, BC. Summer 2000. Canx 19-Sep-2001. Re-regd 19-Sep-2001.
• C-GPVB Inland Air Charters, Prince Rupert, BC. Re-regd 19-Sep-2001. Canx 15-Dec-2003.
• C-GPVB South Moresby Air Charters, Queen Charlotte City, BC. Regd 18-Dec-2003. Canx 24-Apr-2006.
• C-GPVB Air Nootka, Gold River, BC. Regd 24-Apr-2006. Canx. 10-Feb-2011. Regd 23 Feb-2011. Canx and delete from register 03-Sep-2013.
Incident: Aircraft sank in severe-storm, salvaged and transported to Sealand Aviation Ltd., Campbell River, BC., on or about 21-Nov-2006. Active again 06-Jul-2007.