What happened
The incident occurred during the departure phase of flight from an unimproved, remote tidal beach. The solo commercial pilot was operating a specialized aircraft equipped with large tundra tires, which are typically designed for soft surface operations. During the takeoff roll, the landing gear tires penetrated deeply into the soft beach sand rather than maintaining traction on the surface.
This loss of traction caused the airplane to nosed over onto its nose or fuselage. The impact resulted in substantial damage to multiple critical airframe components, including both wings, the fuselage structure, and the empennage (tail section). Despite the severity of the physical damage, the pilot reported that there were no preaccident anomalies with the airplane prior to the event.
The investigation
The primary focus of the examination was the interaction between the aircraft's landing gear and the specific terrain conditions. Investigators noted that even with tundra-tire equipment, the softness of the beach sand provided insufficient support for the takeoff roll. The lack of a hard surface prevented the pilot from maintaining directional control and achieving the necessary lift-off speed.
Findings
The accident was caused by loss of directional control during the takeoff roll due to the landing gear tires digging into soft beach sand. Contributing factors included the terrain type (soft sand) and the phase of flight (takeoff). No mechanical failures were identified as a cause.