NTSB investigations: Allison 250-C20 series, 2014
11 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\") = 2014
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") = 2014
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 ERA15CA055Accident · No injuriesData collectionFinal reportMcdonnell Douglas Helicopter MD500 · Decatur, ALAn undetermined pilot's failure to maintain clearance from an electrical transmission tower resulting in substantial damage to a main rotor blade. Postaccident investigation could not determine which of two pilots was flying the helicopter at the time the…NTSB ERA15CA018Accident · No injuriesData collectionFinal reportBell 206B · Prattville, ALThe pilot's improper fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.NTSB CEN15CA007Accident · Serious injuriesData collectionFinal reportBell 206B · Atlanta, ARThe pilot's inadequate preflight inspection when he did not remove a tie-down strap prior to takeoff, which resulted in a dynamic rollover.NTSB CEN14CA525Accident · No injuriesData collectionFinal reportBell 206B · Nashoba, OKThe pilot's loss of directional control due a loss of tail rotor effectiveness.NTSB WPR14CA363Accident · Serious injuriesData collectionFinal reportHughes 369D · Willows, CAThe pilot's failure to adequately secure cargo (a jacket), which resulted in the jacket exiting the cabin compartment and colliding with the tail rotor during cruise flight.NTSB ERA14FA396Accident · 2 fatalField investigationFinal reportMcdonnell Douglas Helicopter 369E · Northport, ALAn 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 WPR14LA308Accident · Serious injuriesLimited investigationFinal reportMdhi 369D · Oso, WAThe pilot/mechanic’s failure to properly perform required inspections of the main rotor blades at the necessary intervals, which resulted in an in-flight separation of a main rotor blade due to disbonding and fatigue cracking. Contributing to the accident was…NTSB CEN14LA296Accident · Minor injuriesLimited investigationFinal reportBell 206B · Decatur, TXThe flight instructor’s improper recovery from a practice autorotation, which resulted in a hard landing.NTSB CEN14IA270Incident · No injuriesIncident investigationFinal reportBell 407 · Eugene Island 182AThe improper repair of the outer combustion case, which led to its ultimate failure due to the continued progression of a fatigue crack and resulted in a partial loss of engine power during takeoff.NTSB WPR14LA159Accident · Minor injuriesLimited investigationFinal reportBell 206B III · Missoula, MTA dynamic rollover during attempted liftoff.NTSB WPR14LA113Accident · No injuriesLimited investigationFinal reportBell 206 · Bountiful, UTThe pilots' inaccurate assessment of the snow depth on the landing zone, which resulted in a landing on snow deeper than that for which the helicopter was equipped and led to dynamic rollover.