What happened
During the cruise phase of flight, an airline transport certificated pilot was operating a float-equipped aircraft. While initiating a cruise climb, the pilot heard a snapping sound originating from the engine. This was immediately followed by significant engine vibration and metal-to-metal noises as the engine lost power.
In response to the power loss, the pilot identified an emergency landing area on a small lake. The aircraft touched down on the water; however, during the landing sequence, the plane collided with trees and the shoreline. The pilot later noted that the size of the lake was insufficient to bring the aircraft to a complete stop. The impact resulted in damage to both wings and the float assembly.
The investigation
Following the accident, personnel from a salvage company examined the engine. Their inspection revealed a failure of the number five cylinder piston.