NTSB investigations: Allison 250 series, 1984
5 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\") = 1984
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") = 1984
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 LAX85LA002Accident · Minor injuriesLimited investigationFinal reportHiller UH-12E · Firebaugh, CAThe acft collided with terrain while on an aerial application flt. The plt stated he, 'heard a loud bang' while spraying. Then the 'nose of the helicopter dove radically down', and he crashed into the field. Examination of the site revealed that one of the…NTSB LAX84LA428Accident · Serious injuriesLimited investigationFinal reportHiller UH-12ET · Delano, CAThe Hiller UH-12 helicopter (with a soloy conversion) was on a spray run when the eng began losing power. The plt headed for an 'open spot in the trees', but all power was lost the acft collided with almond trees. Only 15 to 18 ozs of fuel were remaining in…NTSB FTW84LA282Accident · Minor injuriesLimited investigationFinal reportBell 47G-5A · Houma, LAThe helicopter autorotated into trees and marsh land after a partial loss of power. The acft was on a pipeline patrol atlow alt at the time of the power loss. Examination of the engine after the accident revealed that the fuel control governor spring, p/n…NTSB MIA84LA179Accident · No injuriesLimited investigationFinal reportBell 47G-5 · Jupiter, FLThe acft crashed landed after a partial loss of power. During an exam of the eng, the compressor bleed control valve was found stuck open causing an improper fuel/air mixture.NTSB NYC84FGM04Accident · No injuriesFinal reportHiller UH-12E · Sigel, PAThe plt was on an aerial application flt over a wooded area. According to him, he had a tail rotor problem & it was necessary to extend his glide to reach an open area. Subsequently, the helicopter landed hard & the main rotor blades struck & severed the tail…