N/A Airport
Aircraft Accident/Incident Report

Kalalau, Hawaii 96825
Thursday, September 12, 2013 13:50 HST

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that the purpose of the flight was to drop off crew members and pick up secured bundles of trash from a remote landing zone. He had landed at this landing zone several times throughout the day. After an uneventful landing, the helicopter started to shake abruptly. The pilot maintained control of the helicopter until the shaking stopped and he could shut down the engine. A witness reported that a tarp from a nearby trash bundle had flown up into the main rotor blades; subsequently, one of the main rotor blades departed the helicopter and sustained substantial damage. There were no mechanical failures or malfunctions with the airframe or engine that would have precluded normal operations.

NTSB Probable Cause Narrative

The entanglement of a tarp in the helicopter's main rotor from a nearby trash bundle.

Event Information

Type of Event Accident
Event Date 9/12/2013
Event Day of the Week Thursday
Time of Event 1350
Event Time Zone Hawaii Standard Time
Event City Kalalau
Event State HAWAII
Event Country --
Zipcode of the event site 96825
Event Date Year 2013
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 221012N
Event Location Longitude 1593918W
Event Location Airport N/A
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1356 Hawaii Standard Time
Direction of event from weather observation facility (degrees) 217
Weather Observation Facility ID HBK
Elevation of weather observation facility 18
Distance of event from weather observation facility (units?) 12
Time Zone of the weather observation HST
Lighting Conditions Day
Lowest Ceiling Height 3600
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 28
Dew Point at event time (in degress fahrenheit) 22
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 6
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.97
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report METAR PHBK 122356Z AUTO 23006KT 10SM BKN036 OVC047
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 3
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 32556
NTSB Notification Source FAA ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jan 16 2014 2:21PM
User who most recently changed record lins-i
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N519PA
NTSB Number WPR13CA406
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name HUGHES
Aircraft Model 369D
Aircraft Series Identifier --
Aircraft Serial Number 370097D
Certified Max Gross Weight 3000
Aircraft Category Helicopter
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jul 17 2013 12:00AM
Airframe hours since last inspection 62
Airframe Hours 5261
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type Unknown
Aircraft Owner Name Patriot Aviation Inc
Aircraft Owner Street Address --
Aircraft Owner City Wilmington
Aircraft Owner State DE
Aircraft Owner Country USA
Aircraft Owner Zipcode 19810
Operator is an individual? No
Operator Name Airborne Aviation Inc
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Kula
Operator State HI
Operator Country USA
Operator Zip code 96790
Operator Code --
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code HLI
Departure City Lihue Airport
Departure State HI
Departure Country USA
Departure Time 1250
Departure Time Zone HST
Destination Same as Local Flt crash at destination city
Destination Airport Code --
Destination City Kalalau
Destination State HI
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 11 2014 3:06PM
User who most recently changed record stam
Since inspection or accident Last Inspection
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --