NTSB Identification: CHI99LA339.
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Accident occurred Sunday, September 12, 1999 in ANN ARBOR, MI
Probable Cause Approval Date: 01/18/2001
Aircraft: Lake LA-4, registration: N1137L
Injuries: 1 Serious.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot told police he was going to practice a touch and go landing on the lake. He said that on touchdown the airplane decelerated as if 'the brakes were locked,' and the airplane cartwheeled. The pilot did not indicate any mechanical problem with the airplane. Subsequent to the accident an examination of the wreckage was conducted. The inspector said the airplane was broken into three major pieces. He said his examination of the wreckage failed to reveal any pre-impact anomalies. He said landing gear was in the retracted position. He said that when he talked to police authorities they told him, 'According to witnesses [the pilot] was attempting a landing on Bruin Lake when he lost control of the aircraft. One of the sponsons hit the water causing the aircraft to flip.'

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The pilot's improper touchdown during a water landing.

Full narrative available

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