A Douglas DC-3C aircraft crashed in Pikangikum Lake, Ontario, Canada, resulting in the fatal injuries of both the pilot and co-pilot. The aircraft departed Red Lake Airport, ON (YRL) as Air Ontario flight 937, bound for Pikangikum Airport, ON (YPM). The flight was hampered by poor weather conditions ? drizzle, low clouds, and fog ? with visibility of one and one-half to two miles. The aircraft was observed flying over the Pikangikum Lake and preparing for a final approach and landing. During the flight, the airplane stalled, striking the ice-covered lake 180 feet south of a tree-covered island. The descent resulted in the aircraft striking the lake bottom at a depth of 8 to 12 feet, with varying ice thickness ranging from one inch to three inches. The probable cause was a stall at an altitude and flight conditions that prevented recovery.A Douglas DC-3C aircraft crashed in Pikangikum Lake, Ontario, Canada, resulting in the fatal injuries of both the pilot and co-pilot. The aircraft departed Red Lake Airport, ON (YRL) as Air Ontario flight 937, bound for Pikangikum Airport, ON (YPM). The flight was hampered by poor weather conditions ? drizzle, low clouds, and fog ? with visibility of one and one-half to two miles. The aircraft was observed flying over the Pikangikum Lake and preparing for a final approach and landing. During the flight, the airplane stalled, striking the ice-covered lake 180 feet south of a tree-covered island. The descent resulted in the aircraft striking the lake bottom at a depth of 8 to 12 feet, with varying ice thickness ranging from one inch to three inches. The probable cause was a stall at an altitude and flight conditions that prevented recovery.