No fatalities

21 Jun 2017: BELL UH1B — JONES AVIATION INC — Williams, CA

Williams, CA, United States
SourcesNTSBPrimary reportUpdated 1778583330Data APIEditorial standards

A helicopter conducting an aerial application flight struck transmission wires with its tail rotor after the pilot reported forgetting to avoid them, resulting in an impact with terrain and substantial damage.

Incident Overview

A helicopter pilot reported that, while maneuvering at low altitude during an aerial application flight, he "forgot to duck" for some nearby transmission wires. The tail rotor subsequently struck the transmission wires, and the helicopter impacted terrain.

Damage Assessment

The helicopter sustained substantial damage to the tailboom as a result of the impact with terrain.

Pilot Statement

The pilot stated that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation. The incident was attributed to the pilot's failure to maintain clearance from the transmission wires while maneuvering at low altitude.

Probable cause

The pilot forgot to duck for nearby transmission wires.

Contributing factors

PilotEffect on operation