Monday, March 12, 2018

Hughes 369D, N499SL, registered to HLH Holdings LLC and operated by High Line Helicopters LLC: Accident occurred March 07, 2018 in Blair, Trempealeau County, Wisconsin

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:

Federal Aviation Administration / Flight Standards District Office; Milwaukee

Aviation Accident Preliminary Report - National Transportation Safety Board: https://app.ntsb.gov/pdf 


 http://registry.faa.gov/N499SL


Aviation Accident Preliminary Report - National Transportation Safety Board

Location: Blair, WI
Accident Number: CEN18LA121
Date & Time: 03/07/2018, 1400 CST
Registration: N499SL
Aircraft: HUGHES 369D
Injuries: 1 Serious, 1 None
Flight Conducted Under:  Part 133: Rotorcraft Ext. Load 

On March 7, 2018, about 1400 central standard time, a Hughes 369D helicopter, transporting a powerline worker via a long line, was involved in an accident near Blair, Wisconsin, when the worker contacted the powerlines and received serious injuries. The helicopter was not damaged and the pilot received no injuries. The helicopter was registered to HLH Holdings, LLC, and was operated by High Line Helicopters, LLC, under the provisions of 14 Code of Federal Regulations Part 133 as a Rotorcraft External-Load Operation. Visual meteorological conditions prevailed for the flight, which was not on a flight plan. The local flight had just originated when the accident occurred.

Aircraft and Owner/Operator Information

Aircraft Manufacturer: HUGHES
Registration: N499SL
Model/Series: 369D D
Aircraft Category: Helicopter
Amateur Built:
Operator: High Line Helicopters
Operating Certificate(s) Held: Rotorcraft External Load (133)
Operator Does Business As:
Operator Designator Code: 4HLL 

Meteorological Information and Flight Plan

Conditions at Accident Site:
Condition of Light:
Observation Facility, Elevation:  BCK
Observation Time: 1355 CST
Distance from Accident Site: 17 Nautical Miles
Temperature/Dew Point: -2°C / -12°C
Lowest Cloud Condition:
Wind Speed/Gusts, Direction: 9 knots/ 14 knots, 290°
Lowest Ceiling: Broken / 3700 ft agl
Visibility:  10 Miles
Altimeter Setting: 29.98 inches Hg
Type of Flight Plan Filed: None
Departure Point: Blair, WI
Destination: Blair, WI 

Wreckage and Impact Information

Crew Injuries: 1 Serious, 1 None
Aircraft Damage: None
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 Serious, 1 None
Latitude, Longitude:  44.304444, -91.000000

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