Circumstances
A certificated flight instructor, occupying the right seat, was providing flight instruction and familiarization training to a commercial pilot in the left seat of a float-equipped airplane. The accident flight was the first flight of the day.
Accident Sequence
According to the instructor, shortly after takeoff, as the airplane climbed to about 50 feet above the water, the airplane began to buffet, and the right wing dropped. The airplane descended and subsequently struck an area of tundra-covered marshy terrain.
Damage
The airplane sustained substantial damage to the wings, fuselage, and empennage.
Postaccident Findings
The instructor reported that a postaccident inspection of the airplane revealed an accumulation of frost on the wings.