NTSB investigations: Allison 250 SER 400HP, 1988
3 cases on aircraft whose registry engine model is Allison 250 SER 400HP. 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
| 1969 | 2 |
|---|---|
| 1972 | 3 |
| 1973 | 1 |
| 1974 | 1 |
| 1975 | 7 |
| 1976 | 7 |
| 1977 | 9 |
| 1978 | 8 |
| 1979 | 10 |
| 1980 | 16 |
| 1981 | 6 |
| 1982 | 7 |
| 1983 | 5 |
| 1984 | 3 |
| 1985 | 8 |
| 1986 | 5 |
| 1987 | 8 |
| 1988 | 3 |
| 1989 | 7 |
| 1990 | 7 |
| 1991 | 5 |
| 1992 | 2 |
| 1993 | 5 |
| 1994 | 3 |
| 1995 | 5 |
| 1996 | 7 |
| 1997 | 7 |
| 1998 | 4 |
| 1999 | 4 |
| 2000 | 3 |
| 2001 | 5 |
| 2002 | 2 |
| 2003 | 6 |
| 2004 | 5 |
| 2005 | 4 |
| 2006 | 1 |
| 2007 | 4 |
| 2008 | 2 |
| 2009 | 2 |
| 2010 | 4 |
| 2011 | 4 |
| 2013 | 2 |
| 2015 | 5 |
| 2016 | 4 |
| 2018 | 1 |
| 2019 | 1 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 2 |
| 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\") = 1988
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03013', '03012'))
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") = 1988
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03013', '03012'))
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 MIA89LA024Accident · Minor injuriesLimited investigationFinal reportBell 206L · St. ThomasThe plt autorotated the helicopter into the water after a loss of power while transitioning from fwd flight to a hover. While landing with the emergency floats armed, he attempted to deploy the floats but was unable. The plt & pax evacuated. The helicopter…NTSB FTW88LA153Accident · No injuriesLimited investigationFinal reportBell 206B · Pearland, TXThe helicopter was at 300 feet AGL, making an approach after a maintenance test flight, when the engine overtemped and engine power was lost. During the autorotation landing, the helicopter touched down hard. The acft eng began to decelerate prior to…NTSB LAX88LA203Accident · Minor injuriesLimited investigationFinal reportBell 206B · Honolulu, HIDuring a sightseeing flt, just after take off, the helicopter began to spin to the right, the plt tried to correct the situation by applying left rudder. The helicopter continued to spin. The plt reduced the throttle and adjusted the collective. The spin…