Monday, July 31, 2017

Barrows Bearhawk Patrol, N410BP: Accident occurred July 28, 2017 at Wittman Regional Airport (KOSH), Oshkosh, Winnebago County, Wisconsin

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Milwaukee, Wisconsin

Aviation Accident Factual Report - National Transportation Safety Board:

Investigation Docket - National Transportation Safety Board: 

NTSB Identification: GAA17CA451
14 CFR Part 91: General Aviation
Accident occurred Friday, July 28, 2017 in Oshkosh, WI
Aircraft: MARK GOLDBERG BEARHAWK PATROL, registration: N410BP
Injuries: 2 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 of the tailwheel-equipped airplane reported that, during the landing roll in crosswind conditions, when "transitioning from rudder to braking the tail started rapidly swinging to the left due to wind." He added that "rudder correction was ineffective" and he applied wheel brakes, but the airplane continued in the ground loop clockwise, the left main landing gear collapsed, and the left wing impacted the runway.

The left wing sustained substantial damage. 

The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

An automated weather observation station, about the time of the accident, at the accident airport, reported wind from 040° at 8 knots. The pilot reported that while on short final the air traffic tower controller announced, "wind 050 at 12." The pilot added that the landing was on runway 36.

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