Otter 3669 was in the Air Force 1951 to late 1981. Sold to Newcal Aviation (N2631U) in 1983 and stored at Decatur, TX it was sold to Prince Ablert, SK based Dawn Air (C-FASF) in 1988. That company folded several months later with the aircraft going to Air Sask Aviation (1988 - 1990). Last with Points North Air Services, on May 1, 1999 the aircraft attempted a take off from a slush covered frozen lake. Failing to get airborne, it clipped the shoreline and slid 300 feet before coming to a stop and catching fire. The pilot and five passengers escaped unhurt, but the aircraft burned.