# NTSB LAX04CA315: Bell 206B, N529RS, Kahului, HI, August 16, 2004 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: August 16, 2004, 10:25 local (20:25 UTC) - Place: Kahului, HI - Coordinates: 20.898611, -156.430557 - Nearby events: https://openairdocs.org/map.md?lat=20.8986&lon=-156.4306&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report December 3, 2004 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 60095 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX04CA315 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/60095/pdf - Page: https://openairdocs.org/ntsb/LAX04CA315 ## Probable cause the pilot's inadequate compensation for the gusty crosswind conditions, which resulted in a dynamic rollover. Contributing factors were the direct crosswind and his lack of total experience in the accident helicopter make and model. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Roll over, takeoff - weather condition - crosswind (contributing factor) - compensation for wind conditions - inadequate, pilot in command (cause) - dynamic rollover - inadvertent, pilot in command (cause) - lack of total experience in type of aircraft, pilot in command (contributing factor) ## Analysis The helicopter experienced a dynamic rollover to the right during an attempted takeoff in gusty crosswinds. The pilot noted the wind was a direct left crosswind at 17 knots with gusts to 21 knots. While applying collective input for takeoff, the left skid started to rise. The pilot countered by applying left pedal and cyclic input; however, the helicopter continued rolling to the right. Witnesses stated the right skid never separated from the helipad. The commercial pilot had a total of 6.6 hours in the accident helicopter make and model. The pilot did not report any anomalies with the helicopter that would have contributed to the accident. ## Factual narrative On August 16, 2004, at 1025 Hawaiian standard time, a Bell 206B helicopter, N529RS, was substantially damaged following a dynamic rollover during takeoff from the Kahului Helipad at the Kahului Airport, Kahului, Hawaii. The commercial pilot, the sole occupant, sustained minor injuries. The helicopter was registered to, and operated by, Pacific Helicopter Tours Inc., Kahului, as a positioning flight under the provisions of 14 CFR Part 91. Day visual meteorological conditions prevailed and a flight plan had not been filed. The flight was originating at the time of the accident and was destined for the Big Island of Hawaii. According to a written statement provided by the pilot, he listened to the airport's ATIS (Automatic Terminal Information Service; recorded voice message that provides weather and airport services information), and received a clearance for takeoff. According to the pilot, "there was a moderate wind and the [helicopter] was in a direct crosswind" on the ramp. During takeoff, the pilot "slowly increased the collective while maintaining [his] heading and attitude with the pedals and cyclic." As the helicopter became light on its skids, the pilot noticed "a little left drift due to the power increase and crosswind," which he corrected for with left pedal input. The helicopter stabilized and the pilot continued to apply increase collective input. As the helicopter's nose began to rise, the pilot "noticed the left skid becoming high." The pilot countered the right roll with left cyclic; however, the skid continued to rise. The pilot increased left cyclic and attempted to reduce collective pitch "immediately," but the helicopter continued rolling to the right. The pilot then heard loud impact, crashing, and cracking sounds. Witnesses to the accident indicated the left skid started to lift during the takeoff while the right skid remained in contact with the ground. The helicopter rapidly rolled over the right. The helicopter sustained structural damage to the fuselage, right horizontal stabilizer, and the lower half of the vertical stabilizer. The main rotor hub, main rotor blades, and one of the tail rotor blades separated from the helicopter. The majority of the main rotor blade/hub assembly came to rest approximately 150 feet aft of the helicopter, while a 2-foot section of a main rotor blade sliced through a parked A-Star helicopter, a hangar wall, and storage closet wall before coming to rest in the storage closet ceiling. No one on the ground was injured. The Kahului airport winds at the time of the accident were reported from 045 degrees at 17 knots with gusts to 21 knots. According to Pacific Helicopter's Safety Officer, the helicopter was facing their hangar and the wind was from the pilot's left side. The pilot indicated there were no anomalies with the helicopter that would have contributed to the accident. The pilot held a commercial rotorcraft certificate and accumulated a total of 451.7 hours of flight time. His total time in helicopters and the Bell 206B equated to 214.8 hours and 6.6 hours, respectively. His last flight in the Bell 206 prior to the accident took place on July 12, 2004. ## Aircraft - Registration: [N529RS](https://openairdocs.org/deregistered/N529RS-2017-05-31), registration cancelled 2017-05-31, S/N 989 (OpenAirDocs) - Reported make and model: Bell 206B - Registry model: [Bell 206B](https://openairdocs.org/model/bell-206b) (registry code 1181511) (OpenAirDocs) - Registry engine: [Allison 250-C20 series](https://openairdocs.org/engine/allison-250-c20-series) (registry code 03020, turbo-prop) (OpenAirDocs) - Category: Helicopter - Serial number: 989 - Airframe hours: 8513.6 - Engines: Allison 250C-20R 420 horsepower turbo shaft - Damage: Substantial damage - Flight: Positioning, Part 91 - Registered owner: Pacific Helicopter Tours, Inc. - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, August 13, 2004 - Departed: OGG, Kahului, HI - Destination: Kona, HI - Flight plan: Unknown - Airport: OGG, Kahului Helipad ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 26; injuries: minor; commercial; instrument ratings: helicopter; medical: class 2, valid medical--no waivers/lim.; flight hours: 452 total, 7 in this make and model, 215 as pilot in command, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: 45° at 17 knots, gusting 21 - Visibility: 10 statute miles - Observed at: OGG ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20040816021829A](https://openairdocs.org/incident/20040816021829A), Aug 16, 2004: Bell 206B, Kahului, HI, Substantial damage. (-23) On August 16, 2004 at approximately 2025Z aircraft N529RS was departing Kahului Airport. On takeoff the aircraft rolled to the right impacting the earth,… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.