# NTSB investigations: Dehavilland DHC-6-300 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. ## Latest cases - [NTSB WPR25LA250](https://openairdocs.org/ntsb/WPR25LA250.md): De Havilland DHC-6-300 · San Celmente, CA · Accident · No injuries · Class 3 · Limited · Preliminary report · Aug 11, 2025 · N344CS · Substantial damage > On August 11, 2025, at 1130 Pacific daylight time, a De Havilland DHC-6-300, N344CS, was substantially damaged when it was involved in an accident at San Clemente Island, California. The 2 pilots and 16 passengers were not injured. The airplane was operated… - [NTSB WPR25LA248](https://openairdocs.org/ntsb/WPR25LA248.md): De Havilland DHC-6-300 · Whitmore, AZ · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Aug 9, 2025 · N189GC · Substantial damage > On August 9, 2025, about 1240 Pacific daylight time, a De Havilland DHC-6-300, N189GC, was substantially damaged when it was involved in an accident near Whitmore, Arizona. Six passengers sustained minor injuries, and the captain, first officer and remaining… - [NTSB WPR25LA152](https://openairdocs.org/ntsb/WPR25LA152.md): Dehavilland DHC-6-300 · Boulder City, NV · Accident · No injuries · Class 3 · Limited · Preliminary report · May 6, 2025 · N142SA · Substantial damage > On May 6, 2023, about 1450 Pacific daylight time, a DeHavilland DHC-6-300, N142SA, was substantially damaged when it was involved in an accident near Boulder City, Nevada. The 2 pilots and 11 passengers were not injured. The airplane was operated as a Title… - [NTSB WPR25LA038](https://openairdocs.org/ntsb/WPR25LA038.md): Dehavilland DHC-6-300 · Boulder City, NV · Accident · No injuries · Class 3 · Limited · Final report · Nov 15, 2024 · N241SA · Substantial damage > A loss of directional control during the landing roll in gusting crosswind conditions. - [NTSB WPR20CA112](https://openairdocs.org/ntsb/WPR20CA112.md): De Havilland DHC6 · Boulder City, NV · Accident · No injuries · Data collection · Final report · Mar 6, 2020 · N72GC · Substantial damage > The trainee pilot's loss of directional control during landing and his subsequent unintentional control interference with the brakes and/or rudder during the trainer pilot's attempted remedial action, which resulted in a runway excursion and collision with a… - [NTSB CEN19LA267](https://openairdocs.org/ntsb/CEN19LA267.md): De Havilland DHC6 · San Marcos, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 15, 2019 · N322AV · Substantial damage > The pilot's delayed go-around attempt and the flight instructor's delayed remedial action that resulted in a nose-down impact with terrain during an attempted go-around. - [NTSB ANC18LA027](https://openairdocs.org/ntsb/ANC18LA027.md): Dehavilland DHC 6 Twin Otter · Arctic Ocean · Accident · Serious injuries · Limited investigation · Final report · Mar 21, 2018 · N716JP · Substantial damage > The flight crew's improper decision to deliberately operate the airplane at low altitude and along a flightpath that resulted in a collision with a pedestrian after takeoff. Contributing to the accident was the pedestrian's proximity to the runway. - [NTSB GAA17CA303](https://openairdocs.org/ntsb/GAA17CA303.md): Dehavilland DHC 6 · Perris, CA · Accident · No injuries · Data collection · Final report · May 24, 2017 · N708PV · Substantial damage > The prospective pilot’s improper landing flare and the pilot’s delayed remedial action to initiate a go-around, which resulted in a runway excursion. - [NTSB WPR14LA313](https://openairdocs.org/ntsb/WPR14LA313.md): Eurocopter EC 130 B4 · Boulder City, NV · Accident · No injuries · Limited investigation · Final report · Jul 25, 2014 · N154GC · 2 aircraft · Substantial damage > The airplane flight crew’s failure to exercise the necessary vigilance and precautions and yield the right of way to the landing helicopter, which resulted in the airplane colliding with the helicopter. Contributing to the accident was the helicopter pilot’s… - [NTSB ENG11IA032](https://openairdocs.org/ntsb/ENG11IA032.md): Dehavilland DHC-6-300 · Peach Springs, AZ · Incident · No injuries · Incident investigation · Final report · May 21, 2011 · N178GC · No damage > A quality control failure in the Sungear, Inc. manufacturing and quality control process allowed sungears with surface finishes of the root fillet radius of the spline that did not conform to the drawing specifications to be released. The surface finish… - [NTSB ANC03LA043](https://openairdocs.org/ntsb/ANC03LA043.md): de Havilland DHC-6 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Apr 10, 2003 · N886EA · Substantial damage > The failure of the captain to maintain adequate clearance between the airplane's wingtip and a parked vehicle. A factor contributing to the accident was the failure of ground personnel to utilize a wing walker as prescribed in company policy when aircraft are… - [NTSB ANC02LA053](https://openairdocs.org/ntsb/ANC02LA053.md): de Havilland DHC-6-300 · Ketchikan, AK · Accident · No injuries · Limited investigation · Final report · Jun 20, 2002 · N353PM · 2 aircraft · Substantial damage > The failure of a ground handler to follow company proceedure/directives, and his premature release of a mooring line. Factors associated with the accident were the congested operations area, and the operator's failure to provide adequate safe zones for the… - [NTSB SEA01TA083](https://openairdocs.org/ntsb/SEA01TA083.md): de Havilland DHC-6-300 · Star, ID · Accident · No injuries · Final report · May 1, 2001 · N49SJ · Substantial damage > Fatigue failure of the nose wheel steering cable during the landing roll. Rough/uneven terrain was a factor. - [NTSB DEN00FA085](https://openairdocs.org/ntsb/DEN00FA085.md): de Havilland DHC-6-300 · Monument Valley, UT · Accident · No injuries · Field investigation · Final report · May 5, 2000 · N241SA · Substantial damage > The pilot-in-command's failure to maintain directional control. A factor was wind shear. - [NTSB ANC99LA107](https://openairdocs.org/ntsb/ANC99LA107.md): de Havilland DHC-6-300 · Ketchikan, AK · Accident · No injuries · Limited investigation · Final report · Aug 7, 1999 · N288SA · 2 aircraft · Substantial damage > A failure of ground handling personnel to verify a release procedure/directive, and removal of the airplane's tiedown, and subsequent collision with a parked airplane. - [NTSB ANC99LA064](https://openairdocs.org/ntsb/ANC99LA064.md): de Havilland DHC-6-300 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · May 25, 1999 · N72GC · Substantial damage > An in-flight collision with a bird. - [NTSB LAX97LA250](https://openairdocs.org/ntsb/LAX97LA250.md): de Havilland DHC-6-300 · Elko, NV · Accident · No injuries · Limited investigation · Final report · Jul 21, 1997 · N776BF · Substantial damage > The failure of maintenance personnel to correctly diagnose and correct a reoccurring nose gear steering problem, and the improperly tensioned nose wheel steering actuator cables which provided the pilot with an erroneous cockpit indication that the nose gear… - [NTSB LAX97LA157](https://openairdocs.org/ntsb/LAX97LA157.md): de Havilland DHC-6-300 · Hilo, HI · Accident · Minor injuries · Limited investigation · Final report · Apr 13, 1997 · N242CA · Destroyed > the pilot's inadequate en route fuel consumption calculations, which led to his failure to recognize a deteriorating fuel duration versus time-to-go situation in a more timely way. - [NTSB MIA96WA110](https://openairdocs.org/ntsb/MIA96WA110.md): de Havilland DH6 · Virgin Gorda, British Virgin Islands · Accident · Minor injuries · Foreign investigation · Apr 7, 1996 · N143SA · Substantial damage - [NTSB SEA94T#A04](https://openairdocs.org/ntsb/SEA94T%23A04.md): de Havilland DHC-6-300 · Mccall, ID · Accident · No injuries · Class 3 · Final report · Aug 22, 1994 · N141Z · Substantial damage - [NTSB ANC92LA010](https://openairdocs.org/ntsb/ANC92LA010.md): De Havilland DHC-6 · Chevak, AK · Accident · No injuries · Limited investigation · Final report · Oct 26, 1991 · N724CA · Substantial damage > The high crosswind condition, the pilot in commands inability to compensate for the wind conditions, and his failure to follow company procedures and the procedures recommended in the aircraft flight manual. Factor relating to the accident was the captain's… - [NTSB DEN91LA082](https://openairdocs.org/ntsb/DEN91LA082.md): Boeing DHC-6-300 · Denver, CO · Accident · No injuries · Limited investigation · Final report · Jun 12, 1991 · N242CA · Substantial damage > The pilot's failure to perform an adequate preflight, I.e., not following the check list and the normal brake system was inoperative as a result of no hydraulic system pressure (hydraulic system circuit breaker not 'in'). - [NTSB LAX87LA250](https://openairdocs.org/ntsb/LAX87LA250.md): de Havilland DHC-6-300 · Grand Canyon, AZ · Accident · No injuries · Limited investigation · Final report · Jun 29, 1987 · N74GC · Substantial damage > While taxiing for takeoff, the underside of the left wing struck the boom of a backhoe parked adjacent to the aircraft ramp. The unattended backhoe was parked in a dirt area adjacent to the ramp with the boom in the extended position while the operator was on… - [NTSB LAX87IA176](https://openairdocs.org/ntsb/LAX87IA176.md): de Havilland DHC-6-300 · Agana (Pacific Ocean) · Incident · No injuries · Incident investigation · Final report · Apr 11, 1987 · N96RA · No damage > As the aircraft approached its home airport at Agana, guam the captain passed out. The first officer took over the controls and landed the acft without further incident. The cause of the incapacitation was not determined. - [NTSB FTW84IA412](https://openairdocs.org/ntsb/FTW84IA412.md): de Havilland DHC-6-300 · Houston, TX · Incident · No injuries · Incident investigation · Final report · Sep 29, 1984 · N914MA · Minor damage > During a landing on rwy 14R, the acft veered off the left side of the rwy, hit a rwy sign & was damaged. At the same time the DHC-6 was approaching to land, a Boeing 727 was also in the traffic pattern to land on rwy 14L. According to tower personnel, the… - [NTSB LAX84FA415](https://openairdocs.org/ntsb/LAX84FA415.md): de Havilland DHC-6-300 · Tau, Antarctica · Accident · 1 fatal · Field investigation · Final report · Jul 21, 1984 · N43SP · Substantial damage > The acft crash landed after the plt used flaps and power to semi-control pitch after the elevator down control cable failed at about 300 ft AGL on final approach. The left wing of the acft hit the terminal roof during the stall mush FROM50 ft AGL. The company… - [NTSB FTW80DA120](https://openairdocs.org/ntsb/FTW80DA120.md): Dehavilland DHC-6 · Wichita Falls, TX · Accident · No injuries · Closed · Sep 21, 1980 · N46RA · Substantial damage - [NTSB LAX80DA011](https://openairdocs.org/ntsb/LAX80DA011.md): Dehavilland DHC-6 · Tau, Antarctica · Accident · Serious injuries · Closed · Nov 5, 1979 · N23BC · Destroyed ## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2802630')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?model=2802630 --- 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.