• 55-3264 United States Army. Delivered 12th April 1956. Designated U-1A.
Allocated to the 14th Army Aviation Company, Fort Riley, KS.
Re-designated the 1st Aviation Company and moved to Fort Benning, GA, Aug-1956 until March 1961.
Reserve Board based at Fort Dix, NJ where it served until Dec-1965.
Otter Transition School at Fort Ord, CA., from Dec-1965 until Jun-1971.
Golden Knights parachute team at Fort Bragg, NC., as a support aircraft, until Apr-1976.
• N5339G Civil Air Patrol (CAP) Jun-1976, assigned to the CAP's Northeast Region. Possibly CT.
• C-GMCW High Noon Holdings Ltd., Calgary, AB. Oct-1979.
• C-GMCW Leased to B.C.-Yukon Air Service Ltd., Watson Lake, YT. Apr-1980. Canx 27-Apr-1983.
For Sale: Feb-1983. Total time 8,238 hours, and an asking price of $125,000CDN.
• C-GMCW Air North Charter & Training Ltd., Whitehorse, YT., 22-Sep-1983 Canx 21-Jun-1994.
Accident Mayo, YT 13th August 1986. The pilot was flying the float- equipped Otter through a narrow pass, with visibility occasionally reduced by rain. He entered the pass with the impression that he could see the top, and would have no difficulty flying through the pass. However, having entered the pass he realised he could not fly over the rising terrain nor turn the aircraft around. He landed straight ahead on the rising slope.
Note: Trucked all the way from the crash site in the Yukon to Ignace, Ontario where it was rebuilt by Mandair, owned by Neil Carl Walsten.
• C-GMCW Walsten Aircraft Parts & Leasing, dba as Mandair, Kenora, ON. Regd 21-Jun-1994 Canx 22-Jul-1994 for certification purposes.
• C-GMCW B.C.-Yukon Air Service Ltd., Watson Lake, YT. Regd 03-Nov-1994 & 10-Nov-1994. Canx 12-Aug-1997.
• C-GMCW Black Sheep Aviation & Cattle Company Ltd., Whitehorse, YT. Regd 12-Aug-1997. Re regd 04-Jun-2002 after turbine engine installation.
Note: Converted to turbine power with a Garrett TPE-331 by Kal Air at their facility at Vernon, BC during 2002.
Note: Attended the DHC 'Out of Production Aircraft' conference held at Victoria, BC in October 2002, being exhibited by Texas Turbine Inc.
Accident: 38 nautical miles northeast of Mayo, YT. 31-Mar-2011.The aircraft departed Mayo on a 94 statute mile day visual flight rules flight to the Rackla Airstrip, YT. At 15:07 Pacific Daylight Time, approximately 19 minutes after the aircraft had left Mayo, a 406 MHz emergency locator transmitter alert was received by the Canadian Mission Control Centre. The Joint Rescue Co-ordination Centre Victoria was notified and a commercial helicopter was dispatched from Ross River, Yukon. Aircraft wreckage was located on a hillside 38 nautical miles northeast of Mayo at 18:33 Pacific Daylight Time. The wheel-ski equipped aircraft had experienced a catastrophic in-flight break-up and the pilot, who was the sole occupant, had sustained fatal injuries. There was no post-impact fire
• C-GMCW Black Sheep Aviation & Cattle Company Ltd., Whitehorse, YT. Canx and deleted 09-Dec-2014.