NTSB investigations: Allison 250 SER 400HP
6 cases on aircraft whose registry engine model is Allison 250 SER 400HP, where the first occurrence was “Hard landing”. 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
| 1983 | 1 |
|---|---|
| 1989 | 1 |
| 1996 | 1 |
| 1997 | 1 |
| 2002 | 1 |
| 2003 | 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 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')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 200))
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 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')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 200))
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 CHI03LA062Accident · No injuriesLimited investigationFinal reportBell 206L-1 · West Plains, MOThe excessive descent rate that required an abrupt flare, resulting in the main rotor severing the tailboom.NTSB SEA02LA172Accident · No injuriesLimited investigationFinal reportHughes 500 · Carnation, WAThe pilot's delayed power application during a practice power recovery autorotation.NTSB ANC98TA011Accident · No injuriesFinal reportBell 206B · Anchorage, AKThe pilot's failure to maintain adequate rotor RPM during an autorotation landing.NTSB SEA96LA205Accident · No injuriesLimited investigationFinal reportBell 206B · Greybull, WYthe pilot's misjudged recovery (remedial action) from a simulated autorotation demonstration.NTSB FTW89LA150Accident · No injuriesLimited investigationFinal reportBell 206B · Oak Grove, LAPilot's improper emergency procedures and flare that led to a hard landing and roll over. Factors in the accident were the pilot's decision to initiate an autorotation following an undetermined event and failure to maintain directional control during the…NTSB MKC83LA149Accident · No injuriesLimited investigationFinal reportHughes 369HS · Springfield, MOThe plt reported that he had made a practice autorotation with a full power recovery & was landing when the accident occurred. He said the helicopter touched down hard, tail 1st, and rocked forward. The helicopter remained upright, but the main rotors struck…