• 51-16520 USAF #1117. L-20A No: 118. Command AF-1. Delivered 01-Jul-1952. Built as L-20A and re-designated U-6A in 1962.
• 51-16520 Utah National Guard.
• 51-16520 Stored at MASDC., Davis Monthan AFB., AZ. 11-Nov-1974 to 10-Oct-1975. PCN (Product Control Number) UD062.
• N67207 Civil Defence, Vidalia, LA. Dates unknown. Sale reported to address at Delhi on USCAR 29-Sep-1979.
• N67207 Louis A. Martin, Delhi, LA. Regd Mar-1980.
Airworthiness Cert. 03-Apr-1980
• N67207 US Government Department of Interior, Boise, ID.
• N67207 Hartley Inc., Branch River Air Service, King Salmon, AK. Regd 02-Jul-1987. On USCAR at 01-Oct-1994. Canx Oct-1997.
Accident: Ruth Lake, AK. 11-Sep-1988. The air taxi pilot was attempting to land his float-equipped airplane on a remote mountain lake in gusty wind conditions. He stated that he touched down with a tailwind component of approximately 5 knots, but that the tailwind increased rapidly during a gust, causing the airplane to decelerate much less quickly than he had anticipated. The airplane struck the beach with enough forward velocity to cause it to nose over. Pilot & two passengers uninjured. ANC88LA137
Accident: King Salmon, AK. 24-Sep-1996. The pilot and three passengers were departing a remote lake in a float equipped airplane. The pilot positioned the hydraulic actuated flaps to 20 degrees. After takeoff, about 150 ft above the water, the pilot positioned the flap lever to the 'UP' position in preparation of pumping the flaps up, but said he did not move the pump handle. Turbulence was present during the takeoff, and during a left turn, the pilot encountered a severe gust at the time he positioned the flap lever. The airplane stalled in a left turn that steepened to almost a 90 degree bank. The airplane descended and the left wing contacted the surface of the lake. The left wing was torn off the fuselage, and the floats were crushed upward. Both flaps are activated by a common torque tube connected to a double-acting flap actuating cylinder. At the accident scene, the right wing flap and right aileron were observed to be extended to an intermediate position. The weather conditions included 20 kts of wind, turbulence, and rain. The pilot expressed a concern that the flaps may have retracted without being pumped to the up position. An examination of the flap system and the ratchet valve assembly was conducted after the airplane was recovered and the wings were removed. Leakage of hydraulic fluid and air was observed through the ratchet valve. Additional testing of the ratchet valve at an overhaul facility did not reveal any leakage. The NTSB determined the probable cause(s) of this accident was the failure of the pilot to maintain sufficient airspeed during the initial climb after takeoff, which resulted in an inadvertent stall and collision with the terrain (water). Turbulence was a related factor. Accident report ANC96TA163
• (N93V) ntu 23-Aug-2000. See note below.
• N67207 Duane E. Peters, AK, Alaska. Regd 25-Aug-2000.
• N67207 Sheyenne Air LLP., Argusville, ND. Regd 31-Jan-2001.
• N67207 Northwest Towers LLC., Missoula, MT. Regd 03-May-2004.
Note: N93V actually assigned to c/n 1403 from 10-May-2006.
• N67207 Western Adventure Seaplane Inc., Missoula, MT. Regd 27-Mar-2007.
• N67207 Olsen Aviation Alaska Inc, Cordova, AK. Regd 12-Apr-2013.
• N67207 Bradley T. Storch, Blaine, MN. Regd 09-Jul-2015.
• N954GF Re registration pending from 10-Aug-2017 to Robert R. Retterath, Fort Lauderdale, FL .Regd 01-Sep-2017.
51-16520 was made available on 09-May-1952 and accepted on 15-May-1952 by the 6600th Air Depot AMO (Air Material Overseas Unit), at Downsview, Ontario after which it was assigned to the Tactical Air Command. It was delivered to Biggs AFB, El Paso, TX and joined the 1st Liaison Squadron remaining until 27-Jul when it moved to 3rd Liaison Squadron at George AFB, Victorville, CA. It was then reassigned to the Air Material Command and went to the Sacramento Air Material Area, at McLellan AFB, California on 10-Dec-1952 and on to Burbank, San Francisco, CA on 22-Jan-1953 prior to embarkation to Japan and being assigned to the Far East Air Force.
It arrived in Japan with the 6408th Maintenance Support Group at Kizarazu on the 29th Jan-1953 and was moved on to the 3rd Liaison Squadron at Komaki, Nagoya by 24-Feb 1953 where it remained until 24-Mar-1954. Staying in Japan it moved to the 6400th Air Depot at Showa remaining until 04-Jun-1954 before returning to Komaki with the 3rd Liaison Squadron. Several deployments with this unit now occurred to Itazuke, Fukuoka and Kisawa after which it joined the 6110th Air Base Wing at Komaki in Mar-1955 and then the 8th Fighter Bomber Wing at Itazuke on 24-Oct-1955 where it stayed for exactly a year before another period at Showa from 20-Oct-1956 until 04-Jan 1957 when it returned to the 8th FB Wing at Itazuke and then to the 6143rd Air Base Group at the same location.