Accident Overview
A float-equipped airplane sustained damage to its left wing and fuselage after colliding with the lake shore and trees. The accident occurred during a water taxiing demonstration on a lake. Both pilots on board were certificated flight instructors, and the flight was conducted under Title 14 CFR Part 91 as a local area proficiency/instructional flight.
Flight Details
After landing on the lake, the second pilot practiced making step turns. The first pilot, seated in the right seat, then took the flight controls to demonstrate continuous water taxiing and turning while on-step. According to the first pilot, he taxied around the perimeter of the lake and began a right turn, still on-step, but the airplane did not respond. Application of right rudder did not prevent the airplane from colliding with the lake shore and trees.
Pilot Statement
The first pilot indicated that the wind was about 6 knots from the north-northeast at the time. He stated that he thought the airplane encountered a wind shear at the narrowest portion of the lake where the accident occurred.