Incident Summary
A commercial pilot was conducting a banner tow flight. After completing the tow, the pilot made a low level approach to the runway and released the banner. Following release, the pilot initiated a climb to 300 feet above ground level (AGL) and entered left traffic for Runway 36.
Flight Sequence
During the turn onto final approach, the airplane began to descend. At the time, the aircraft was in a bank of approximately 15 to 20 degrees. The left main landing gear subsequently collided with water, causing the airplane to nose over.
Outcome
The aircraft came to rest in 3 to 4 feet of water, approximately 200 yards southwest of the runway. The aircraft sustained damage from the impact with water and the subsequent nosing over.