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NTSB Report
July 25, 2018 · Eurocopter AS 350 B3 · N354LA
Kobuk, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 25, 2018
Injury Outcomes
1 injury (1 minor injury)
Location
Kobuk, AK
Aircraft
Eurocopter AS 350 B3 (2000)
Tail Number
N354LA
Operator
Trans Aero Helicopters
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
ANC18CA056
The commercial pilot of the helicopter was transporting equipment in support of remote mining activities using a 100-foot long-line. During takeoff, and while preparing to lift the external sling load, he inadvertently allowed the helicopter to drift laterally to the right and the right skid struck the ground, resulting in a dynamic rollover. The helicopter continued to roll to the right, and the main rotor blades struck the ground. The helicopter subsequently came to rest on its right side, sustaining substantial damage to the main rotor drive system, fuselage, and tail boom. The pilot sustained minor injuries, and reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-(general)-Not attained/maintained
Full Narrative
The commercial pilot of the helicopter was transporting equipment in support of remote mining activities using a 100-foot long-line. During takeoff, and while preparing to lift the external sling load, he inadvertently allowed the helicopter to drift laterally to the right and the right skid struck the ground, resulting in a dynamic rollover. The helicopter continued to roll to the right, and the main rotor blades struck the ground. The helicopter subsequently came to rest on its right side, sustaining substantial damage to the main rotor drive system, fuselage, and tail boom. The pilot sustained minor injuries, and reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.
Flight
Event TypeAccident
Event Time10:45 AKDT
Nearest Airport0nm
Flight Plan FiledCvfr
Flight Plan ActivatedYes
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftEurocopter AS 350 B3
Tail NumberN354LA
Aircraft CategoryHeli
DamageSubstantial
OperatorTrans Aero Helicopters
Operating RulePart 133
Engines1
Engine TypeTurboshaft
Engine DetailsSafran · Arriel · Turboshaft · 847
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 47 · Second Class · Minor
Conditions
ConditionsVMC
LightDaylight
Wind175° @ 15 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point66 F / 0 C
Altimeter0
Weather SourcePILO