No fatalities

28 Jul 2017: MARK GOLDBERG BEARHAWK PATROL NO SERIES — Oshkosh, WI

Oshkosh, WI, United States

On 28 Jul 2017, a MARK GOLDBERG BEARHAWK PATROL NO SERIES was involved in an aviation accident near Oshkosh, WI. No fatalities were reported. Investigators recorded the probable cause as: The pilot's failure to maintain directional control during the landing roll in crosswind conditions, which resulted in a ground loop. This summary draws on records from NTSB.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

During a crosswind landing on runway 36, a tailwheel airplane entered a ground loop after transitioning from rudder to braking. The left main landing gear collapsed and the left wing impacted the runway, resulting in substantial damage.

Accident Details

The pilot of a tailwheel-equipped airplane reported a loss of directional control during the landing roll in crosswind conditions. According to the pilot, as he transitioned from using rudder to applying wheel brakes, the tail began to swing rapidly to the left due to the wind. Rudder correction proved ineffective, and despite the application of wheel brakes, the airplane continued into a clockwise ground loop. Subsequently, the left main landing gear collapsed, and the left wing struck the runway surface.

Damage

The left wing sustained substantial damage. The pilot stated that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

Weather Conditions

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

Contributing factors

Causes

PilotDirectional control — Not attained/maintained

Other contributing factors

Effect on operation