No fatalities

25 May 2012: HUGHES 369HS — Teryjon Aviation, Inc. — Delavan, MN

Delavan, MN, United States

On 25 May 2012, a HUGHES 369HS operated by Teryjon Aviation, Inc. was involved in an aviation accident near Delavan, MN. No fatalities were reported. Investigators recorded the probable cause as: The pilot’s failure to maintain clearance with power lines during an aerial application flight. 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 struck power lines while spraying a drainage ditch, then impacted a corn field. The pilot was seriously injured and the aircraft sustained substantial damage.

Accident Details

A pilot was conducting an agricultural spraying operation over a drainage ditch when he encountered a railroad track embankment. He increased altitude to clear the tracks, then descended back into the ditch on the opposite side to continue spraying. While maneuvering, he observed power lines in his flight path. Despite an attempt to avoid them, the helicopter's left landing skid struck the lines.

Impact and Damage

The helicopter subsequently impacted an adjacent corn field approximately 250 feet from the power lines. The pilot sustained serious injuries. The helicopter suffered substantial damage to the fuselage and tailboom.

Pilot Report

The pilot reported that there were no failures or malfunctions related to the helicopter prior to the accident.

Contributing factors

Altitude — Not attained/maintained