NTSB Identification: WPR10CA049
14 CFR Part 91: General Aviation
Accident occurred Sunday, November 01, 2009 in Grangeville, ID
Probable Cause Approval Date: 03/03/2010
Aircraft: PIPER PA-18-150, registration: N82213
Injuries: 1 Uninjured.

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, who was making a visual-flight-rules approach to an 800-foot-long remote airstrip, overflew the runway to observe the windsock. Because he observed the windsock hanging limp, he assumed that the winds around the runway were calm, and therefore continued his approach. About the time he reached the approach end of the uphill-sloping runway, the airplane encountered a strong tailwind gust, which pushed it "…too far up the strip to land." The pilot therefore executed a go-around, but his decision was "too late" and he was therefore unable to outclimb the terrain on the departure end of the runway. During the go-around sequence, the airplane's landing gear came in contact with brush and it flipped over onto its back. Ground witnesses told the pilot that all morning the winds had been variable in direction and had been changing rapidly from nearly calm to gusting as high as 20 miles per hour.

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

The pilot's delayed decision to execute a go-around in gusting winds and with up-sloping terrain.

Full narrative available

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