What happened
The pilot had previously made several unsuccessful attempts to initiate takeoff from a snow-covered lake surface. Seeking better traction or clearance, the pilot identified a plowed area that provided access to a fish house located on the ice. The aircraft was taxied into this prepared zone, and the pilot began a takeoff roll directed toward the east.
During the initial rotation phase of the flight, as the aircraft lifted off the ground, the left wing's control surface made contact with the upper portion of the fish house structure. Despite this impact, the pilot maintained control of the aircraft and continued the maneuver. The aircraft landed safely approximately 50 yards beyond the obstacle without sustaining further damage or incident.
The investigation
The physical examination of the aircraft confirmed that the left aileron was damaged due to contact with the fish house during the lift-off phase. No other mechanical anomalies were reported prior to the event. The snow conditions on the lake likely contributed to the initial difficulty in achieving sufficient airspeed for takeoff, prompting the search for an alternative departure point.
Findings
The primary factor leading to the incident was the choice of a departure location that lacked adequate vertical clearance above nearby structures. The pilot's decision to utilize a plowed area near a fish house resulted in insufficient height during rotation. The lack of successful takeoffs from the open lake surface suggests potential issues with snow density or aircraft performance relative to the available runway length on ice.
Safety message
Pilots operating from unprepared surfaces, particularly frozen bodies of water, must ensure that all obstacles along the intended flight path are accounted for. Adequate clearance above structures such as fish houses is critical during the initial climb phase where altitude gain is minimal.