Originally US Army 58-1692, this Otter worked in Alaska as N90575 with Frontier Flying Service 1975 until an accident in 1979. Rebuilt, it emerged as C-GMDG in 1980 for Air Park Aviation to support mining, exploration and (during summer months) fly-in sports fishing camps. Acquired by Fort Frances Sportsmen Airways (Northern Wilderness Outfitters) in April 1985, this long serving aircraft had a Vazar turbine conversion in 1997.