NTSB investigations: Allison 250 SER 250HP, 2011
3 cases on aircraft whose registry engine model is Allison 250 SER 250HP. 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
| 1967 | 1 |
|---|---|
| 1968 | 3 |
| 1969 | 4 |
| 1970 | 9 |
| 1971 | 3 |
| 1972 | 9 |
| 1973 | 6 |
| 1974 | 2 |
| 1975 | 4 |
| 1976 | 1 |
| 1977 | 5 |
| 1978 | 2 |
| 1979 | 5 |
| 1980 | 8 |
| 1981 | 13 |
| 1982 | 9 |
| 1983 | 9 |
| 1984 | 10 |
| 1985 | 4 |
| 1986 | 5 |
| 1987 | 8 |
| 1988 | 6 |
| 1989 | 5 |
| 1990 | 10 |
| 1991 | 1 |
| 1993 | 6 |
| 1994 | 6 |
| 1995 | 1 |
| 1996 | 5 |
| 1997 | 3 |
| 1998 | 6 |
| 1999 | 8 |
| 2000 | 4 |
| 2001 | 3 |
| 2002 | 6 |
| 2003 | 6 |
| 2004 | 5 |
| 2005 | 4 |
| 2006 | 6 |
| 2007 | 3 |
| 2008 | 5 |
| 2009 | 1 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 5 |
| 2013 | 4 |
| 2014 | 3 |
| 2015 | 1 |
| 2016 | 4 |
| 2017 | 2 |
| 2019 | 1 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 4 |
| 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\") = 2011
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03002', '03003'))
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") = 2011
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03002', '03003'))
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 WPR12LA036Accident · Serious injuriesLimited investigationFinal reportBell 206B · Woodburn, ORThe pilot’s failure to maintain ground clearance while maneuvering with an external load line.NTSB CEN11LA646Accident · No injuriesLimited investigationFinal reportBell 206B · Spicewood, TXThe pilot did not maintain adequate rotor rpm during a low-altitude maneuvering flight.NTSB CEN11LA200Accident · No injuriesLimited investigationFinal reportHughes 369D · Henryetta, OKFailure of the cyclic control system for reasons undetermined.