NTSB Identification: WPR10CA179
14 CFR Part 91: General Aviation
Accident occurred Wednesday, March 24, 2010 in Lebanon, OR
Probable Cause Approval Date: 07/01/2010
Aircraft: STINSON 108-3, registration: N6063M
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.
The pilot of the tailwheel-equipped airplane completed a number of touch-and-go landings, and then made a full-stop landing so that he could taxi to the parking area to talk with some friends. When he took off again a few minutes later to do one final landing before putting the airplane away, he discovered that the wind speed had picked up and that he would be landing in a gusting crosswind. During the landing roll, which was along the leeward side of a row of hangars with occasional spaces between them, the airplane started turning toward the left side of the runway (into the wind). When the pilot found that full right brake and full right rudder was not enough to bring the airplane back to the right, he added a significant amount of engine power in an attempt to regain control. Although the airplane's ground track began to straighten after he added power, the pilot kept the right-wheel brake fully applied, resulting in the airplane attaining a nose-down attitude, whereupon the propeller began hitting the runway surface. With the propeller hitting the runway surface, the pilot found it necessary to reduce power, and therefore the airplane turned further left, and its left main wheel departed the left edge of the runway onto soft terrain. The left wheel then sank into the terrain, and with the right brake still fully applied, the airplane nosed over onto its back. The accident sequence resulted in substantial damage to the vertical stabilizer, left wing, and left wing lift strut.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's failure to release his brake application after adding power to regain directional control during the landing roll. Full narrative available
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