On 22 Sep 2015, a BRUNZLICK LARRY R SEAWIND 3000 EXPERIM NO SERIES operated by BRUNZLICK LARRY R. was involved in an aviation accident near Pelican Lake, WI. No fatalities were reported. Investigators recorded the probable cause as: Abnormal runway contact which precipitated a loss of directional control and impact with water. This summary draws on records from NTSB.
While practicing landings on a lake, the pilot of an experimental amateur-built amphibious airplane experienced a skip and subsequent left turn after the left wing tip sponson contacted the water, resulting in a 180-degree rotation and substantial damage to sponsons and rudder.
Incident Details
The pilot of an experimental amateur-built amphibious airplane was practicing landings on a lake. During the accident landing, the airplane "skipped slightly about 2 feet off the water." The pilot held the attitude and allowed the airplane to descend again, but inadvertently let the left wing tip sponson settle onto the water while the airplane was still traveling at approximately 55 knots. The airplane then began to turn to the left, and the sponson dug into the water further. The pilot reported that he did not correct the situation quickly enough, and the airplane completed a 180-degree turn before coming to rest.
Damage
After the airplane was towed to shore, substantial damage was observed to both wing sponsons and the rudder.
Pilot Report
The pilot stated that there were no pre-impact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.
Contributing factors
PilotLateral/bank control — Not attained/maintained