In 1998 became the prototype for conversion to the Orenda OE-600A engine, a liquid-cooled, 8 cylinder V-block unit which promised to be a more economical alternative to the PT6 turboprop. In 2003 the Orenda Company went out of business; the aircraft was grounded and stored. Bought by Harbour Air in 2008 and taken by truck across Canada, from St. Felicien QC, to Vancouver, BC, for Vazar PT6 conversion. Joined the Harbour Air fleet as Turbine Otter "316", C-GHAZ. Sentimental value for the photographer. This was on the 1994 Silver Wedding North American trip.

Built in 1952 for the USAF, then transferred to the US Army in 1955. Retired from military service by 1958. Variously N7164C, CF-MHR, and N7942C before becoming CF-ZKU in 1970.