Incident Overview
During a floatplane instructional flight, the private pilot, supervised by an instructor pilot, decided to conduct a practice landing and takeoff on a large lake. The landing on calm water was uneventful.
Sequence of Events
During the takeoff run, just before liftoff, the aircraft encountered the wake of a large boat. As it crossed the crest of the first wave of the wake, the aircraft became momentarily airborne. It then impacted the advancing forward face of the second wave. At the moment of impact, four of the float attach fittings failed. The pilot immediately aborted the takeoff, but the right wing impacted the surface of the water before the aircraft came to a stop.
Crew Observations
Neither the private pilot nor the supervising instructor pilot had seen the large swell approaching during the landing. During the takeoff run, both pilots did not notice the swell until a few seconds prior to impact.
Damage
The float attach fittings failed, and the right wing impacted the water. No further details on damage extent are available from the source.