What happened
The accident occurred during the initial phase of flight at a dry gravel strip under calm wind conditions. The pilot initiated the takeoff roll normally until just prior to lift-off. At that critical moment, the main landing gear rolled over a board measuring two by twelve inches that was lying on the runway surface.
The board flipped upward upon impact with the tire and struck the right elevator of the aircraft. According to the pilot's report, a portion of the elevator separated from the control surface as a result of this collision. The sudden loss of horizontal stabilizing force made it impossible for the pilot to maintain directional or pitch control.
Unable to continue the climb, the aircraft settled back toward the ground and touched down on an adjacent beach area approximately 150 feet from the end of the gravel strip. Upon impact with the soft sand, the aircraft flipped over onto its back. The pilot later stated that the board was covered by a thin layer of sand, rendering it invisible during the high-speed takeoff roll.
The investigation
The investigation focused on the mechanical integrity of the flight control surfaces following the incident. Examination confirmed that the right elevator had suffered structural failure due to the impact with foreign object debris on the runway. No other mechanical failures were reported prior to the event.
Findings
The primary factors contributing to this accident included the pilot's inability to maintain control after the elevator damage and the presence of unsecured debris on the takeoff surface. The board, though small, acted as a significant hazard due to its position and material rigidity. The lack of visibility caused by the sand cover prevented avoidance.
Safety message
Runway incursions by foreign object debris pose severe risks during critical phases of flight. Pilots should exercise heightened awareness when operating from unimproved strips where loose materials may be present. Ground crews must ensure all tools and materials are secured before aircraft operations begin.