# NTSB investigations: Allison 250-C20 series, AK 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 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 ANC13LA066](https://openairdocs.org/ntsb/ANC13LA066.md): Cessna T207A · King Salmon, AK · Accident · Minor injuries · Limited investigation · Final report · Jul 21, 2013 · N499K · Substantial damage > The pilot’s inadequate visual lookout while departing from a multiple-use waterway, which resulted in a collision with a drifting boat. Contributing to the accident were the lack of visual conspicuity of the boat and the limited amount of time the boat… - [NTSB ANC07LA022](https://openairdocs.org/ntsb/ANC07LA022.md): Hughes 369D · Gustavus, AK · Accident · No injuries · Limited investigation · Final report · Mar 3, 2007 · N5134V · Substantial damage > The inadequate clearance from a tranquilized moose while hovering in ground effect, and the operator's inadequate procedures for such operations, which resulted in an in-flight collision with the moose. Factors associated with the accident were the moose, a… - [NTSB ANC05CA049](https://openairdocs.org/ntsb/ANC05CA049.md): Bell 206B · Elim, AK · Accident · No injuries · Data collection · Final report · Mar 15, 2005 · N422R · Substantial damage > The pilot's continued flight into adverse weather conditions, and his failure to maintain adequate clearance while maneuvering, which resulted in an in-flight collision with terrain. Factors associated with the accident are flat light, whiteout conditions,… - [NTSB ANC03LA073](https://openairdocs.org/ntsb/ANC03LA073.md): Bell 206B · Aniak, AK · Accident · Minor injuries · Limited investigation · Final report · Jul 10, 2003 · N111MT · Substantial damage > The compressor discharge pressure line (Pc line) B-nut coming loose at the fuel control unit, which resulted in a total loss of engine power, and subsequent in-flight collision with trees during an autorotation. A factor associated with the accident was the… - [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 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 ANC96TA092](https://openairdocs.org/ntsb/ANC96TA092.md): Hughes 369D · Ketchikan, AK · Accident · No injuries · Final report · Jun 26, 1996 · N5125Q · Substantial damage > The pilot's failure to maintain control of the helicopter. The pilot's selection of unsuitable terrain for landing was a factor in the accident. - [NTSB ANC95LA115](https://openairdocs.org/ntsb/ANC95LA115.md): Bell 206B · Talkeetna, AK · Accident · Minor injuries · Limited investigation · Final report · Jul 26, 1995 · N85CA · Substantial damage > The inadvertent restriction of the anti-torque pedal by the pilot's foot, while the pilot (an incomplete paraplegic) was attempting to land. - [NTSB ANC95LA014](https://openairdocs.org/ntsb/ANC95LA014.md): Bell 206B · Kenai, AK · Accident · No injuries · Limited investigation · Final report · Dec 4, 1994 · N3179X · Substantial damage > The pilot's failure to follow the information in the flight manual concerning the use of the particle separator kit and deflector kit when operating in falling snow. Factors were the rough terrain in the forced landing area and no installation of the… - [NTSB SEA84LA134](https://openairdocs.org/ntsb/SEA84LA134.md): Hughes 369D · Wrangell, AK · Accident · No injuries · Limited investigation · Final report · Jun 16, 1984 · N5133U · Substantial damage > The helicopter was parked with the eng running when it was struck by another acft, a Beech C-45G. Prior to the collision, the helicopter was at a low RPM; therefore, the plt was unable to move the helicopter out of the way. The Beech acft was being taxied… - [NTSB ANC83FA144](https://openairdocs.org/ntsb/ANC83FA144.md): Bell 206L-1 · Bettles, AK · Accident · No injuries · Field investigation · Final report · Aug 13, 1983 · N1081K · Substantial damage > According to the plt, the low fuel warning light illuminated when the fuel gage was indicating 200 lbs. He reported he could see the arpt lights & elected to continue the flt. After arriving, he terminated his apch to a 30 to 50 ft hover with no forward… - [NTSB ANC82DA062](https://openairdocs.org/ntsb/ANC82DA062.md): Hughes 369D · Near Bornite, AK · Accident · 1 fatal · Final report · Jul 28, 1982 · N820Y · Destroyed > Two workers were transported to a mine drilling site where the helicopter was landed on a man-made heli-pad. The heli-pad was an area about 50 ft long and 12 ft wide that had been cut into the side of a rocky hill. After off-loading the workers, the pilot… - [NTSB ANC81FA064](https://openairdocs.org/ntsb/ANC81FA064.md): Hughes 369D · Tanacross, AK · Accident · Minor injuries · Closed · Jun 19, 1981 · N11035 · Substantial damage - [NTSB ANC76AA024](https://openairdocs.org/ntsb/ANC76AA024.md): Hughes 369HS · Nome, AK · Accident · No injuries · Closed · Aug 17, 1975 · N9196F · Substantial damage - [NTSB ANC74AA013](https://openairdocs.org/ntsb/ANC74AA013.md): Hughes 369HS · Ketchikan, AK · Accident · Serious injuries · Closed · Jul 30, 1973 · N177ST · Substantial damage ## 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."eventStateOrRegion" = 'AK' AND c."eventCountry" = 'USA' 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&state=AK --- 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.