What happened
The flight was conducted under visual flight rules in deteriorating weather conditions, prompting the pilot to initiate a precautionary landing. The selected touchdown site was a frozen slough rather than a prepared runway or taxiway.
Upon initial contact with the icy surface, the aircraft encountered high gusty crosswinds. These wind conditions caused the aircraft to veer sharply to the right. As it drifted laterally, the right main landing gear broke through the thin ice covering the slough.
The impact and subsequent bounce lifted the aircraft back onto an icy bank adjacent to the water. During this rebound, the nose landing gear struck a submerged or exposed rock. The force of the collision caused the nose gear to collapse, bringing the flight to an abrupt stop.
The investigation
Examination of the wreckage revealed significant structural damage consistent with off-airport landing procedures on uneven terrain. The right main gear had penetrated the ice layer, indicating insufficient depth or stability of the frozen surface for safe operations. The nose landing gear assembly showed signs of catastrophic failure due to impact with a hard object (rock) after the aircraft bounced.
Findings
The primary factors contributing to this accident were:
- Deteriorating weather conditions that necessitated an immediate landing.
- Selection of an inappropriate landing site (frozen slough) lacking adequate surface integrity.
- High gusty crosswinds during touchdown, which reduced directional control.
- Impact with a rock after the aircraft bounced onto an icy bank.
Safety message
Pilots should avoid making precautionary landings on frozen bodies of water unless absolutely necessary. Ice thickness and underlying terrain hazards (such as rocks or debris) are often invisible and cannot support standard aircraft weights, especially during dynamic maneuvers like bouncing or veering in crosswinds.