NTSB Identification: WPR11CA130
14 CFR Part 91: General Aviation
Accident occurred Wednesday, February 09, 2011 in Wilsonville, OR
Probable Cause Approval Date: 06/13/2011
Aircraft: ALLARDYCE MICHAEL GLASTAR, registration: N238MA
Injuries: 1 Minor.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

According to the pilot, he took off from the airport in his amphibious experimental airplane with the intention of flying a closed traffic pattern. Because he planned to land back on the runway, he left the landing gear in the extended position. During departure, he overflew a river, located about 3 miles north of the airport, and observed that the water was calm. The pilot stated that he made a spur of the moment decision to land in the river, and he forgot that the wheels were extended. The airplane was not equipped with an aural gear warning horn or gear position lights; however, it was equipped with mirrors on each wing in which he could have visually determined the position of the gear. The pilot stated that he did not check the position of the gear with the mirrors. He indicated that he forgot to raise the gear prior to landing in the water. Consequently, the airplane nosed over as it decelerated. During this event, a portion of the lower engine cowl broke, and most of the front windscreen separated from the cockpit. The pilot reported that he did not experience any malfunction with the airplane.

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

The pilot's failure to raise the landing gear wheels prior to landing in water, resulting in a nose over.

Full narrative available

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