No fatalities

12 Nov 2016: ROBINSON HELICOPTER COMPANY R44 II — S. M. HENTGES & SONS INC. — Stone Lake, WI

Stone Lake, WI, United States

On 12 Nov 2016, a ROBINSON HELICOPTER COMPANY R44 II operated by S. M. HENTGES & SONS INC. was involved in an aviation accident near Stone Lake, WI. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s failure to maintain lateral control while in a hover and the helicopter’s subsequent impact with a tree. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.

SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

A helicopter sustained substantial damage when its main rotor blade struck a tree during a hover taxi after the pilot stopped and the aircraft drifted left.

Incident Overview

A helicopter pilot reported that the accident occurred while performing a hover taxi for takeoff. The helicopter was approximately three feet above the ground when the pilot believed he saw a person at the corner of a driveway. In response, the pilot stopped the helicopter, and the aircraft subsequently drifted to the left. During this leftward drift, the main rotor blade impacted a nearby tree, causing substantial damage to the fuselage.

Operational Details

The pilot stated that there were no preaccident mechanical malfunctions or failures with the helicopter that would have prevented normal operation. The flight was intended to proceed with takeoff after the hover taxi phase.

Post-Accident Information

The investigation focused on the sequence of events as described by the pilot. No information regarding the aircraft make, model, registration, operator, location, date, time of day, weather conditions, or involvement of air traffic control was provided in the initial report. The number of occupants and any injuries were also unspecified.

Damage Assessment

The accident resulted in substantial damage to the helicopter's fuselage due to the rotor strike. The extent of damage beyond the fuselage was not detailed.

Contributing factors

Directional control — Not attained/maintainedPilotEffect on operation