NTSB investigations: Allison 250-C20 series, 2003
19 cases on aircraft whose registry engine model is Allison 250-C20 series. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
Cases per year
| 1973 | 2 |
|---|---|
| 1974 | 1 |
| 1975 | 2 |
| 1978 | 1 |
| 1979 | 3 |
| 1980 | 3 |
| 1981 | 5 |
| 1982 | 2 |
| 1983 | 2 |
| 1984 | 7 |
| 1985 | 6 |
| 1986 | 6 |
| 1987 | 6 |
| 1988 | 5 |
| 1989 | 7 |
| 1990 | 6 |
| 1991 | 5 |
| 1992 | 9 |
| 1993 | 7 |
| 1994 | 13 |
| 1995 | 10 |
| 1996 | 10 |
| 1997 | 10 |
| 1998 | 4 |
| 1999 | 16 |
| 2000 | 13 |
| 2001 | 13 |
| 2002 | 14 |
| 2003 | 19 |
| 2004 | 15 |
| 2005 | 14 |
| 2006 | 12 |
| 2007 | 19 |
| 2008 | 5 |
| 2009 | 10 |
| 2010 | 4 |
| 2011 | 4 |
| 2012 | 6 |
| 2013 | 9 |
| 2014 | 11 |
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 9 |
| 2018 | 10 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 7 |
| 2023 | 3 |
| 2024 | 5 |
| 2026 | 2 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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 year(c.\"eventDate\") = 2003
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"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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 year(c."eventDate") = 2003
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" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB LAX04LA116Accident · No injuriesLimited investigationFinal reportHughes 369D · Wahiawa, HIThe pilot's failure to properly secure the external sling load, which allowed the load to shift, and subsequently strike and remove the tail rotor.NTSB CHI04LA027Accident · Minor injuriesLimited investigationFinal reportBell 206B · Coleman, WIThe loss of engine power for undetermined reasons and the unsuitable terrain encountered for the forced landing. The garage building was a factor.NTSB CHI04LA017Accident · Minor injuriesLimited investigationFinal reportHughes 369HS · Evansville, MNThe pilot's misjudgment of clearance from the surface of the lake during the aerial application pass. The low altitude operation, glassy water, and his visual perception were contributing factors.NTSB FTW03LA216Accident · No injuriesLimited investigationFinal reportBell 206B-3 · Kisatchie, LAA loss of engine power due to water contamination in the fuel system.NTSB FTW03LA197Accident · Minor injuriesLimited investigationFinal reportBell 206B · Mason, TXThe pilot's failure to maintain clearance with the power line. A contributing factor was the sunglare.NTSB SEA03FA169Accident · Serious injuriesField investigationFinal reportAerospatiale AS350D · Webb, IDAn over temperature condition within the gas generator turbine which led to first stage turbine blade fatigue as well as first stage blade track warping and consequent blade tip rub. The fatigue and blade tip rub ultimately led to blade separation and failure…NTSB MIA03TA152Accident · No injuriesFinal reportBell BHT-206-B3 · Fort Myers, FLThe pilot's failure to adequately clear the right skid of obstructions which resulted in a dynamic rollover to the right during takeoff and damage to the helicopter.NTSB ANC03LA073Accident · Minor injuriesLimited investigationFinal reportBell 206B · Aniak, AKThe 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 CHI03LA172Accident · Minor injuriesLimited investigationFinal reportBell 206B · Baxter, MNThe pilot's failure to maintain control of the helicopter due to a loss of tail rotor effectiveness. Factors contributing to this accident were the helicopter's low airspeed, low altitude, the crosswind, and the trees.NTSB MIA03FA120Accident · Minor injuriesField investigationFinal reportAerospatiale AS355F1 · Madison, FLThe pilot in command's diverted attention and loss of control while attempting to takeoff, which resulted in the main rotor blades being dragged, and the helicopter rolling over.NTSB LAX03LA183Accident · Minor injuriesLimited investigationFinal reportBell 206B · Malone, TXa fuel starvation induced loss of engine power due to fuel contamination.NTSB DEN03LA092Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Cheyenne, WYthe pilot's failure to maintain aircraft control. A contributing to the accident was the sudden tailwind encountered.NTSB ATL03LA095Accident · No injuriesLimited investigationFinal reportAerospatiale AS355F2 · Bainbridge, GAThe pilot's improper flare during an attempted landing.NTSB FTW03LA147Accident · No injuriesLimited investigationFinal reportBell 206B · Hurst, TXThe improper flare by the pilot receiving instruction, which resulted in the hard landing. A contributing factor was the flight instructor's inadequate supervision.NTSB FTW03LA134Accident · No injuriesLimited investigationFinal reportHughes 369HS · Conroe, TXThe pilot's inability to control the helicopter after encountering loss of tail rotor effectiveness. A contributing factor was the unfavorable winds.NTSB SEA03LA058Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Taholah, WAThe entanglement of the fuel quantity sender float in the start pump wiring within the fuel tank as a result of the wiring not being properly secured. This rendered the fuel gauge inaccurate and the low fuel warning light inoperative which led to fuel…NTSB FTW03FA118Accident · 2 fatalField investigationFinal reportBell 407 · Broadus, TXThe 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 CHI03FA060Accident · 1 fatalField investigationFinal reportAgusta A109C · West Chicago, ILThe 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 FTW03LA080Accident · Serious injuriesLimited investigationFinal reportBell 206B · Putnam, TXthe pilot's failure to properly interpret and confirm a faulty tachometer instrument indication and his improper flare during the ensuing precautionary autorotation, which resulted in a hard landing. Also causal was the failure of the tachometer.