59-year-old man injured, transported to hospital, after his single-engine aircraft, fitted with pontoons, crashes on Lake Winnipesaukee in Alton.

A small plane crashed into Lake Winnipesaukee in Alton around 12:30 p.m. Tuesday.

The plane crashed into the water near Rattlesnake Island. The seaplane was fully submerged in the lake after the crash.

The pilot, a 59-year-old Massachusetts man, was taken to a local hospital to be checked out. Marine Patrol said its officers found the man clinging to the plane. He was conscious and able to tell them what happened.

The pilot told rescuers that he was doing touch-and-go landings when he had a "pontoon failure," causing the plane to flip.

According to the Federal Aviation Administration, the plane is a Cessna 206 aircraft. The FAA is investigating the incident.

The plane is submerged in about 105 feet of water. The Department of Environmental Services has placed booms on the water at the scene of the crash.