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NTSB Report
May 25, 2012 · Hughes 369HS · N11ZX
Delavan, MN
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
May 25, 2012
Injury Outcomes
1 injury (1 serious injury)
Location
Delavan, MN
Aircraft
Hughes 369HS
Tail Number
N11ZX
Operator
Teryjon Aviation
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
CEN12CA319
The pilot reported that he was spraying a drainage ditch when he encountered a railroad track embankment. He increased altitude to clear the tracks, but, as he descended back into the ditch on the opposite side of the tracks to continue spraying, he observed a set of power lines in his flight path. He attempted to maneuver to avoid the lines, but the left landing skid of the helicopter struck the lines. The helicopter subsequently impacted an adjacent corn field about 250 feet from the power lines. The pilot was seriously injured, and the helicopter sustained substantial damage to the fuselage and tailboom. The pilot reported that there were no failures or malfunctions related to the helicopter before the accident.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Altitude-Not attained/maintained - C
Full Narrative
The pilot reported that he was spraying a drainage ditch when he encountered a railroad track embankment. He increased altitude to clear the tracks, but as he descended back into the ditch on the opposite side of the tracks to continue spraying, he observed a set of power lines in his flight path. He attempted to maneuver to avoid the lines, but the left landing skid of the helicopter struck the lines. The helicopter subsequently impacted an adjacent corn field about 250 feet from the power lines. The pilot was seriously injured, and the helicopter sustained substantial damage to the fuselage and tailboom. The pilot reported that there were no failures or malfunctions related to the helicopter prior to the accident.
Flight
Event TypeAccident
Event Time17:35 CDT
Nearest AirportFairmont Municipal (19nm)
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 369HS
Tail NumberN11ZX
Aircraft CategoryHeli
DamageSubstantial
OperatorTeryjon Aviation
Operating RulePart 137
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20 · Turboshaft · 450
Seats4
People & Injuries
Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 64 · Second Class · Serious
Conditions
ConditionsVMC
LightDaylight
Wind120° @ 4 kt
Visibility4 sm
CeilingOvercast 11000 ft
Temperature / Dew Point63 F / 55
Altimeter30.05 inHg
Observation Time22:35
Weather SourceWFAC