MARK GOLDBERG BEARHAWK PATROL
Oshkosh, WI — July 28, 2017
Event Information
| Date | July 28, 2017 |
| Event Type | ACC |
| NTSB Number | GAA17CA451 |
| Event ID | 20170728X24846 |
| Location | Oshkosh, WI |
| Country | USA |
| Coordinates | 43.98444, -88.55695 |
| Airport | WITTMAN RGNL |
| Highest Injury | NONE |
Aircraft
| Make | MARK GOLDBERG |
| Model | BEARHAWK PATROL |
| Category | AIR |
| FAR Part | 091 |
| Aircraft Damage | SUBS |
Conditions
| Light Condition | DAYL |
| Weather | VMC |
Injuries
| Fatal | 0 |
| Serious | 0 |
| Minor | 0 |
| None | 2 |
| Total Injured | 0 |
Event Location
Probable Cause
The pilot's failure to maintain directional control during the landing roll in crosswind conditions, which resulted in a ground loop.
Full Narrative
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.
About This NTSB Record
This aviation event was investigated by the National Transportation Safety Board (NTSB). NTSB investigates all U.S. civil aviation accidents to determine probable cause and issue safety recommendations to prevent future accidents.