# Fatal NTSB investigations: Allison 250-C20 series NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 1 of 2 · 65 cases ## Latest cases - [NTSB ANC24FA089](https://openairdocs.org/ntsb/ANC24FA089.md): Bell 206B · King Salmon, AK · Accident · 1 fatal · Class 3 · Field · Final report · Sep 7, 2024 · N306FW · Substantial damage > The pilot’s decision to initiate the visual flight into instrument meteorological conditions, which resulted in his spatial disorientation, failure to maintain helicopter control and subsequent impact with water. - [NTSB WPR22FA101](https://openairdocs.org/ntsb/WPR22FA101.md): Mcdonnell Douglas 500N · Newport Beach, CA · Accident · 1 fatal · Class 3 · Field · Final report · Feb 20, 2022 · N521HB · Substantial damage > The helicopter’s encounter with unanticipated right yaw during a low-altitude, low-airspeed, tight-radius orbit. Contributing to the accident was the pilot’s distraction during the orbit, which resulted in the loss of control, his fatigue due to his early… - [NTSB CEN22FA086](https://openairdocs.org/ntsb/CEN22FA086.md): Bell 206B · Livingston, TX · Accident · 2 fatal · Class 3 · Field · Final report · Dec 30, 2021 · N8AU · Substantial damage > The pilot exceeding the yaw control capability of the helicopter for the flight conditions, resulting in a non-mechanical loss of tail rotor effectiveness. - [NTSB ERA21LA269](https://openairdocs.org/ntsb/ERA21LA269.md): Garlick Helicopters OH-58A+ · Alpine, AL · Accident · 1 fatal · Class 3 · Limited · Final report · Jun 25, 2021 · N372NS · Substantial damage > The pilot’s failure to maintain clearance from powerlines during a low-level aerial application flight, resulting in main rotor blade impact with a fiber-optic cable, a loss of control, and the helicopter’s subsequent impact with terrain. - [NTSB ERA21FA130](https://openairdocs.org/ntsb/ERA21FA130.md): Bell 206 · St Thomas, CB · Accident · 4 fatal · Class 3 · Field · Final report · Feb 15, 2021 · N13AT · Destroyed > A total loss of engine power due to fatigue failure of two of the stage 3 compressor blades. Contributing to the failure of the compressor blades was the failure of maintenance personnel to inspect the compressor at the recommended interval for operation in… - [NTSB CEN19FA020](https://openairdocs.org/ntsb/CEN19FA020.md): Hughes 369 · McDougal, AR · Accident · 1 fatal · Class 2 · Field · Final report · Nov 2, 2018 · N5187S · Destroyed > The pilot's failure to maintain the helicopter's clearance from the powerline structure while hovering in gusty wind conditions, which resulted in an inadvertent collision with the structure and an uncontrolled descent into terrain. - [NTSB ERA19FA035](https://openairdocs.org/ntsb/ERA19FA035.md): Aerospatiale AS 355F2 · Beekmantown, NY · Accident · 2 fatal · Field investigation · Final report · Oct 30, 2018 · N372CA · Destroyed > The pilot's failure to keep the helicopter clear of a utility pole while hovering with a tailwind, which resulted in a dynamic rollover into active power lines. - [NTSB ERA18LA183](https://openairdocs.org/ntsb/ERA18LA183.md): Bell 206 · Rio Grande, PR · Accident · 1 fatal · Limited investigation · Final report · Jun 30, 2018 · N10CV · Substantial damage > A total loss of engine power due to oil exhaustion, which resulted in an uncontrolled descent and hard landing. - [NTSB WPR18FA074](https://openairdocs.org/ntsb/WPR18FA074.md): Hughes 369D · Pomeroy, WA · Accident · 1 fatal · Field investigation · Final report · Jan 27, 2018 · N369TH · Substantial damage > A loss of control following the gunner's failure to ensure that the net maintained clearance from the tail rotor. - [NTSB CEN17FA100](https://openairdocs.org/ntsb/CEN17FA100.md): Bell 206B · Galveston, TX · Accident · 1 fatal · Field investigation · Final report · Feb 7, 2017 · N978RH · Destroyed > The pilot's failure to recognize the flight had encountered instrument meteorological conditions at night, which resulted in an unrecognized descent and collision with water. - [NTSB ERA14FA396](https://openairdocs.org/ntsb/ERA14FA396.md): Mcdonnell Douglas Helicopter 369E · Northport, AL · Accident · 2 fatal · Field investigation · Final report · Aug 19, 2014 · N444RS · Substantial damage > An inadvertent collision with a utility wire for reasons that could not be determined from recorded data and examination of the helicopter and accident site. - [NTSB WPR13FA208](https://openairdocs.org/ntsb/WPR13FA208.md): Bell 206B · Shepherd, MT · Accident · 1 fatal · Field investigation · Final report · Apr 27, 2013 · N150SP · Substantial damage > The pilot’s loss of control while maneuvering during low-altitude operations due to sudden neurological impairment or incapacitation and the helicopter’s subsequent collision with power lines. - [NTSB WPR13GA128](https://openairdocs.org/ntsb/WPR13GA128.md): Bell 206B · Eureka, NV · Accident · 1 fatal · Final report · Feb 18, 2013 · N20620 · Substantial damage > The pilot’s failure to maintain clearance from a wire while maneuvering during low-altitude operations. Contributing to the accident was task- and/or work-related fatigue. - [NTSB CEN13FA009](https://openairdocs.org/ntsb/CEN13FA009.md): Bell 206B · Crowley, LA · Accident · 1 fatal · Field investigation · Final report · Oct 10, 2012 · N333DR · Substantial damage > The pilot’s failure to maintain clearance from the broadcast tower guy-wires. - [NTSB CEN12FA321](https://openairdocs.org/ntsb/CEN12FA321.md): Bell 206-L4 · (Gulf of Mexico) · Accident · 1 fatal · Field investigation · Final report · May 28, 2012 · N7077F · Substantial damage > The pilot’s failure to maintain clearance from an obstacle while landing on an obstructed helipad, which resulted in a collision and loss of control. Contributing to the accident was the failure of the helipad owner to mark the helipad closed and the failure… - [NTSB CEN11WA042](https://openairdocs.org/ntsb/CEN11WA042.md): Agusta A109 · New Castle, United Kingdom · Accident · 3 fatal · Foreign investigation · Oct 23, 2010 · N2NR · Destroyed - [NTSB ERA09FA414](https://openairdocs.org/ntsb/ERA09FA414.md): Hughes 369 · Franklin, PA · Accident · 1 fatal · Field investigation · Final report · Jul 22, 2009 · N61735 · Substantial damage > A loss of engine power due to fuel exhaustion as a result of the pilot's fuel mismanagement. - [NTSB LAX07LA270](https://openairdocs.org/ntsb/LAX07LA270.md): Hughes 369D · Ellensburg, WA · Accident · 1 fatal · Limited investigation · Final report · Sep 8, 2007 · N31HM · No damage > The passenger's inadequate visual lookout and failure to maintain clearance from the rotating main rotor disc while the helicopter was hovering. An uphill terrain condition was a factor - [NTSB MIA07FA098](https://openairdocs.org/ntsb/MIA07FA098.md): Hughes 369A · Moulton, AL · Accident · 1 fatal · Field investigation · Final report · May 13, 2007 · N468WE · Destroyed > The separation of a main rotor blade from its tension torsion bar for an undetermined reason. - [NTSB LAX06LA288](https://openairdocs.org/ntsb/LAX06LA288.md): Hughes 369D · Somis, CA · Accident · 2 fatal · Limited investigation · Final report · Sep 6, 2006 · N812CE · Substantial damage > The pilot's inadequate visual lookout, which resulted in a collision with wires. - [NTSB SEA05MA202](https://openairdocs.org/ntsb/SEA05MA202.md): Agusta A109A II · Edmonds, WA · Accident · 3 fatal · Major investigation · Final report · Sep 30, 2005 · N655GS · Destroyed > Loss of control for an undetermined reason during maneuvering flight, which resulted in an in-flight collision with water. - [NTSB MIA05LA088](https://openairdocs.org/ntsb/MIA05LA088.md): Schweizer 269D · Atlantic Ocean (Atlantic Ocean) · Accident · 1 fatal · Limited investigation · Final report · Mar 29, 2005 · N4767 · Destroyed > An inflight collision with the ocean for undetermined reasons. - [NTSB DFW05FA086](https://openairdocs.org/ntsb/DFW05FA086.md): Bell 206B-3 · Shelbyville, TX · Accident · 3 fatal · Field investigation · Final report · Mar 10, 2005 · N85BH · Substantial damage > The pilot's failure to maintain altitude and clearance for undetermined reasons. - [NTSB MIA05FA008](https://openairdocs.org/ntsb/MIA05FA008.md): Eurocopter Deutschland BO-105 CBS5 · Santa Rosa Bch, FL · Accident · 3 fatal · Field investigation · Final report · Oct 20, 2004 · N916SH · Destroyed > The pilot's spatial disorientation and in-flight loss of control of the helicopter after encountering night instrument meteorological conditions resulting in collision with water during the resultant uncontrolled descent. A factor in the accident was the… - [NTSB FTW04TA237](https://openairdocs.org/ntsb/FTW04TA237.md): Bell OH-58C · Beaumont, TX · Accident · 1 fatal · Final report · Sep 16, 2004 · N9273T · Destroyed > **This probable cause was modified on 2/22/2016. Please see the public docket for this accident for additional details.** The pilot's failure to maintain a safe altitude, resulting in collision with the water. A factor was the dark night. - [NTSB SEA04TA163](https://openairdocs.org/ntsb/SEA04TA163.md): Bell 206B · Mead, WA · Accident · 1 fatal · Final report · Aug 17, 2004 · N34698 · Destroyed > The reversal of the reel machine during a sock line pull which resulted in a loss of control while hovering out of ground effect. Factors were the failure of company management to develop adequate procedures for conducting sock line pulls, the inadequate… - [NTSB FTW03FA118](https://openairdocs.org/ntsb/FTW03FA118.md): Bell 407 · Broadus, TX · Accident · 2 fatal · Field investigation · Final report · Mar 27, 2003 · N175PA · Destroyed > The partial loss of engine power due to erratic fuel flow metering to the engine resulting from the single point failure of the PLA potentiometer in the hydro-mechanical fuel control unit. A contributing factor was the lack of suitable terrain to execute a… - [NTSB CHI03FA060](https://openairdocs.org/ntsb/CHI03FA060.md): Agusta A109C · West Chicago, IL · Accident · 1 fatal · Field investigation · Final report · Jan 29, 2003 · N109MX · Destroyed > The pilot's failure to maintain control of the helicopter while maneuvering, resulting in the excessive descent rate and impact with terrain. Factors to the accident included the dark night, low ceiling and reduced visibility at the time of the accident. - [NTSB IAD02LA094](https://openairdocs.org/ntsb/IAD02LA094.md): Garlick OH-58AT · Rochester, MA · Accident · 1 fatal · Limited investigation · Final report · Sep 14, 2002 · N444JB · Substantial damage > The pilot's failure to center the sling load prior to commencing forward flight. Also causal, was the pilot's improper decision to attempt a takeoff with a quartering tailwind, which resulted in an engine compressor stall. - [NTSB DEN02FA065](https://openairdocs.org/ntsb/DEN02FA065.md): Bell 206BIII · Raton, NM · Accident · 2 fatal · Field investigation · Final report · Jun 27, 2002 · N2779B · Destroyed > The pilot's failure to maintain clearance of the static wire. Factors were the static wire, and the glaring sunlight condition. - [NTSB FTW02FA099](https://openairdocs.org/ntsb/FTW02FA099.md): Bell 206L-4 · Eugene Isld 188 · Accident · 1 fatal · Field investigation · Final report · Mar 23, 2002 · N7077B · Destroyed > The pilot's failure to maintain aircraft control during takeoff. A contributing factor was the pilot's inadequate preflight which resulted in his failure to remove the left front tie down. - [NTSB DEN02GA016](https://openairdocs.org/ntsb/DEN02GA016.md): Hughes 369E · Park City, UT · Accident · 3 fatal · Final report · Dec 27, 2001 · N280SP · Destroyed > the pilot's inadequate visual lookout, resulting in an inflight collision with powerlines. Contributing factors were the fog and the powerlines. - [NTSB SEA02FA008](https://openairdocs.org/ntsb/SEA02FA008.md): Bell 206L · Anchorage, AK · Accident · 3 fatal · Field investigation · Final report · Oct 18, 2001 · N400EH · Substantial damage > The pilot's failure to maintain clearance from the surface of an open body of water while intentionally attempting to maintain a very low altitude while in cruise flight. Factors include falling snow, low ceilings, whiteout/greyout conditions, and flat/glassy… - [NTSB MIA01FA006](https://openairdocs.org/ntsb/MIA01FA006.md): Aerospatiale AS-355-F2 · Burlington, NC · Accident · 1 fatal · Field investigation · Final report · Oct 17, 2000 · N355DU · Destroyed > The mechanics failure to comply with manufacturers instructions for correction of a illuminated main rotor gearbox oil pressure warning light resulting in the helicopter being dispatched on a ferry flight with a failed main rotor gearbox oil pump, failure of… - [NTSB LAX00MA273](https://openairdocs.org/ntsb/LAX00MA273.md): Aerospatiale AS 355F1 · Kahului, Maui, HI · Accident · 7 fatal · Major investigation · Final report · Jul 21, 2000 · N510TG · Destroyed > The pilot's inadequate decision by which he continued visual flight rules flight into instrument meteorological conditions. Also causal was his failure to maintain terrain clearance resulting in a collision with mountainous terrain. A contributing factor was… - [NTSB DEN00FA082](https://openairdocs.org/ntsb/DEN00FA082.md): McDonnell Douglas 369E · Bloomfield, NM · Accident · 2 fatal · Field investigation · Final report · May 2, 2000 · N1606K · Destroyed > The pilot's intentional buzzing (low level flying), and his failure to maintain clearance with the static wire. A factor was his physical impairment by a contraindicated drug controlled substance. - [NTSB FTW00FA091](https://openairdocs.org/ntsb/FTW00FA091.md): Eurocopter BO105S-CBS-5 · Dalhart, TX · Accident · 4 fatal · Field investigation · Final report · Mar 10, 2000 · N335T · Destroyed > The pilot's failure to maintain control of the helicopter as a result of his continued flight into known adverse weather conditions. Factors were the dark night light condition, fog, low ceiling, and the pilot's lack of total instrument flight time. - [NTSB CHI00FA020](https://openairdocs.org/ntsb/CHI00FA020.md): Bell 206B · Cottage Grove, MN · Accident · 2 fatal · Field investigation · Final report · Nov 1, 1999 · N565KS · Destroyed > Undetermined. - [NTSB LAX00GA025](https://openairdocs.org/ntsb/LAX00GA025.md): McDonnell Douglas 500N · San Jose, CA · Accident · 2 fatal · Final report · Oct 25, 1999 · N904PD · Destroyed > The pilot's in-flight loss of control due to the failure and separation of the forward thruster control cable telescoping sleeve ball swivel fitting, which resulted in a stuck thruster and the entry into an uncontrollable yaw/spin. Also causal was the… - [NTSB LAX99LA292](https://openairdocs.org/ntsb/LAX99LA292.md): Hughes 369HS · Pohnpei (Pacific Ocean) · Accident · 2 fatal · Limited investigation · Final report · Sep 1, 1999 · N42054 · Destroyed > An in-flight collision with the water for undetermined reasons. - [NTSB MIA99FA158](https://openairdocs.org/ntsb/MIA99FA158.md): Hughes 369E · Intercession, FL · Accident · 1 fatal · Field investigation · Final report · May 20, 1999 · N144CM · Substantial damage > The pilot's improper fuel management that resulted in fuel exhaustion and a total loss of engine power. - [NTSB LAX99FA136](https://openairdocs.org/ntsb/LAX99FA136.md): Bell 206B · Grand Canyon, AZ · Accident · 1 fatal · Field investigation · Final report · Apr 1, 1999 · N992UC · Destroyed > The failure of the flight crew to properly preflight the helicopter and to detect and remove accumulated snow from the engine inlets and plenum chamber. Factors in the accident were the clouded plenum chamber inspection window and the failure of preceding… - [NTSB LAX98LA200](https://openairdocs.org/ntsb/LAX98LA200.md): Hughes 369HS · Pacific Ocean (Pacific Ocean) · Accident · 2 fatal · Limited investigation · Final report · Jun 16, 1998 · N95MS · Destroyed > The improper shimmying of the tail rotor driveshaft by maintenance personnel which induced fatigue in the tail rotor driveshaft coupling causing it to fail, which resulted in a loss of tail rotor control. A factor is the failure of the pilot to recognize the… - [NTSB ANC97GA126](https://openairdocs.org/ntsb/ANC97GA126.md): Bell BH-206B · Dillingham, AK · Accident · 1 fatal · Final report · Aug 21, 1997 · N18FH · Destroyed > The pilot's intentional VFR flight into instrument meteorological conditions (IMC). Factors associated with the accident are the pilot's failure to activate the cabin heating system, the lack of an operable windshield defogger, the pilot's overconfidence in… - [NTSB FTW97FA121](https://openairdocs.org/ntsb/FTW97FA121.md): MBB BO-105S · Lena, LA · Accident · 1 fatal · Field investigation · Final report · Mar 14, 1997 · N7161J · Destroyed > The pilot's continued VFR flight into instrument meteorological conditions, and his subsequent loss of aircraft control due to spatial disorientation. Factors were the pilot not following company procedures and directives, the low ceiling, and the dark night… - [NTSB LAX97GA105](https://openairdocs.org/ntsb/LAX97GA105.md): McDonnell Douglas 369D · Santee, CA · Accident · 1 fatal · Final report · Feb 17, 1997 · N5200Y · Substantial damage > Spatial disorientation and temporary visual impairment that led to a loss of aircraft control as result of difficulty to light adaptivity. Contributing was the crew coordination and inadequate night flight recurrency training. - [NTSB SEA96LA165](https://openairdocs.org/ntsb/SEA96LA165.md): Bell 206B · Warren, ID · Accident · 1 fatal · Limited investigation · Final report · Jul 24, 1996 · N750LT · Destroyed > the pilot's improper remedial action after helicopter's right skid became snagged by a log that was used in the construction of a temporary landing site. Factors relating to the accident were: the pilot's selection of an unsuitable landing area, inadequate… - [NTSB FTW96FA028](https://openairdocs.org/ntsb/FTW96FA028.md): Mbb BO-105S · League City, TX · Accident · 2 fatal · Field investigation · Final report · Oct 26, 1995 · N105AG · Destroyed > the pilot's failure to maintain aircraft control. Factors were the pilot's lack of total experience in the MBB BO-105 helicopter and the dark night light conditions. - [NTSB LAX95FA339](https://openairdocs.org/ntsb/LAX95FA339.md): Bell 206L-1 · Irvine, CA · Accident · 1 fatal · Field investigation · Final report · Sep 20, 1995 · N700TH · Destroyed > the pilot's intentional VFR flight into IMC conditions and failure to maintain an adequate terrain clearance altitude, and the local controller's improper use of ATC procedure/technique. Factors in the accident were the helicopter's low fuel state and lack of… - [NTSB NYC95LA009](https://openairdocs.org/ntsb/NYC95LA009.md): Aerospatiale AS-355 · Jonesville, VA · Accident · 1 fatal · Limited investigation · Final report · Oct 15, 1994 · N5787A · Destroyed > The pilot's failure to maintain clearance from the power lines. Next page: https://openairdocs.org/ntsb.md?engine=03020&fatal=1&page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."highestInjuryLevel" = 'Fatal' AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03020')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=03020&fatal=1 --- 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.