What happened
On a morning in mid-1997, a pilot departed Nimpo Lake, British Columbia, flying a float-equipped Cessna 180J for a short visual flight to Knot Lake. The mission involved transporting personal belongings and equipment to the lake. After the aircraft failed to return to its base by early afternoon, an aerial search was initiated by the company owner. During the search, an emergency locator transmitter signal was detected near the destination, leading to the discovery of the aircraft partially submerged in the lake.
An investigation by RCMP divers revealed that the pilot had sustained a fatal head injury and subsequently drowned. The aircraft was found in approximately 35 feet of water, with significant structural damage, including a missing left wing and separated floats. The damage pattern was consistent with a cartwheeling impact with the water surface.
The investigation
Investigators examined the aircraft's condition, maintenance records, and the environmental factors present at the time of the accident. The Cessna 180J was within its maximum allowable weight limits at takeoff, carrying a pilot, fuel, and various cargo items including an outboard motor and gasoline. While a cargo net was available, it was unclear if it had been utilized.
Witnesses fishing near the site observed the aircraft flying overhead shortly before the accident, noting that the lake surface was very rough with visible whitecaps. The company owner, who participated in the search, noted that the landing area was situated at the confluence of two distinct airflows—a prevailing south wind and a descending wind from a glacial ravine. This intersection is known to generate significant turbulence.
Regarding the pilot, records indicated he was a competent professional with a commercial license and recent experience at the location. Toxicological results were negative for drugs and alcohol. However, it was noted that while shoulder harnesses were installed in the aircraft, the pilot was only wearing the lap belt at the time of the crash.
Findings
- The aircraft struck the water and crashed, likely due to the pilot encountering turbulence and losing control during the landing attempt.
- Strong winds were present in the area, creating hazardous conditions and rough water.
- The aircraft sustained damage typical of a wing-tip strike followed by a cartwheel motion.
- The pilot was not utilizing the available shoulder harness during the flight.