What happened
On September 1, 2005, a float-equipped de Havill and DHC-2 Beaver, registration C-FODG, departed Squaw Lake, Quebec, for a series of visual flight rules (VFR) trips to remote wilderness camps. The flight, operated by NordPlus, included a passenger and supplies. While the morning weather was suitable for flight, conditions were forecast to deteriorate significantly throughout the day.
After completing visits to Camp 2 and Camp Pons, the pilot encountered worsening weather and performed a precautionary landing at Elross Lake. At 1630, the pilot communicated via HF radio his intention to depart Elross Lake for Squaw Lake, believing a break in the weather had occurred. However, the aircraft never arrived at the base. A search operation was launched the following morning, and the wreckage was discovered 4 nm from Elross Lake. The aircraft was destroyed by a post-impact fire, and the pilot sustained fatal injuries.
The investigation
The investigation examined the aircraft's maintenance history, the pilot's experience, and the meteorological conditions at the time of the crash. The de Havilland DHC-2 Beaver had been maintained according to regulations, and the pilot was a highly experienced professional with a valid commercial license and instrument rating.
Investigators analyzed the terrain and weather patterns in the Howells River valley. Environmental data indicated that at the time of the accident, the area was experiencing low ceilings, poor visibility, and strong winds. The wreckage distribution and damage to the wings were consistent with an aerodynamic stall. The investigation also looked into the communication methods used, noting that while the pilot successfully reported his intentions, the HF radio signal was poor.
Findings
- The pilot attempted to traverse a mountain ridge during adverse weather conditions.
- The aircraft entered an aerodynamic stall at an altitude that left no margin for recovery.
- Contributing factors included the loss of visual ground references, moderate to severe turbulence, and strong updrafts.
- The low cloud ceiling likely forced the aircraft to fly at a low altitude, increasing the risk of terrain impact.
- The use of HF radio for flight following, while functional in this instance, is less reliable in remote regions than satellite-based communication.