NTSB investigations: Allison 250 series, 1996
2 cases on aircraft whose registry engine model is Allison 250 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
| 1966 | 2 |
|---|---|
| 1968 | 1 |
| 1973 | 1 |
| 1974 | 3 |
| 1975 | 3 |
| 1976 | 3 |
| 1977 | 1 |
| 1978 | 3 |
| 1979 | 2 |
| 1980 | 5 |
| 1981 | 3 |
| 1982 | 2 |
| 1983 | 1 |
| 1984 | 5 |
| 1985 | 2 |
| 1986 | 1 |
| 1989 | 1 |
| 1991 | 1 |
| 1993 | 4 |
| 1994 | 1 |
| 1996 | 2 |
| 1997 | 1 |
| 1998 | 3 |
| 1999 | 1 |
| 2000 | 2 |
| 2001 | 2 |
| 2002 | 2 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 2 |
| 2006 | 1 |
| 2007 | 2 |
| 2008 | 2 |
| 2009 | 1 |
| 2010 | 3 |
| 2011 | 1 |
| 2012 | 2 |
| 2013 | 1 |
| 2014 | 2 |
| 2015 | 1 |
| 2016 | 3 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 2 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
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\") = 1996
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03014', '03019'))
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") = 1996
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03014', '03019'))
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 SEA97TA023Accident · 1 fatalFinal reportBell 47G-3B-1 · Fillmore, UTinadequate procedure and inadequate monitoring by the pilot, the operator, and/or other personnel, which allowed one of three external cables to the seed bucket to become entangled with the right skid of the helicopter, resulting in an imbalance and loss of…NTSB MIA96LA210Accident · 1 fatalLimited investigationFinal reportBell 47G-4A · Adel, GAthe pilot's misjudgment of clearance between the helicopter and the antenna. A factor relating to the accident was the pilot's use of a drug (medication) that had sedative effects.