NTSB investigations: Allison 250-C47 series, LA
8 cases on aircraft whose registry engine model is Allison 250-C47 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
| 2003 | 2 |
|---|---|
| 2012 | 1 |
| 2015 | 1 |
| 2017 | 1 |
| 2019 | 1 |
| 2022 | 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 c.\"eventStateOrRegion\" = 'LA' AND c.\"eventCountry\" = 'USA'
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03029'))
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."eventStateOrRegion" = 'LA' AND c."eventCountry" = 'USA'
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03029'))
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 CEN23FA019Accident · 1 fatalClass 3 · FieldFinal reportBell 407 · Morgan City, LAThe pilot’s loss of consciousness due to a cardiovascular event.NTSB CEN22FA100Accident · 2 fatalClass 3 · FieldFinal reportBell 407 · Houma, LAThe pilot’s sudden loss of consciousness for undetermined reasons during cruise flight, which resulted in a loss of control and impact with terrain.NTSB CEN19FA095Accident · 2 fatalClass 2 · FieldFinal reportBell 407 · Galliano, LAThe pilot's loss of control during cruise flight as a result of spatial disorientation while operating the helicopter in close proximity to terrain in marginal meteorological conditions.NTSB CEN17FA112Accident · 1 fatalField investigationFinal reportBell 407 · Chauvin, LAThe pilot's failure to maintain proper altitude resulting in a collision with water for reasons that could not be determined based on the available information.NTSB CEN15LA265Accident · No injuriesLimited investigationFinal reportBell 407 · Pecan Island, LAThe fatigue fracture of the tail rotor gearbox attachment studs, which resulted in a loss of tail rotor control and a subsequent hard landing.NTSB CEN13FA003Accident · 1 fatalField investigationFinal reportBell 407 · Intracoastal City, LAThe pilot’s decision to attempt a local flight in marginal visual meteorological conditions and his subsequent loss of control following an inadvertent encounter with instrument metrological conditions shortly after takeoff.NTSB FTW03TA156Accident · No injuriesFinal reportBell 407 · Franklin, LAThe loss of tail rotor effectiveness due to the inadequate maintenance performed by other company personnel.NTSB FTW03FA117Accident · No injuriesField investigationFinal reportBell 407 · Houma, LAThe loss of tail rotor drive and anti-torque control resulting from the fracture and separation of the #5 tail rotor drive segment due to the overtemperature and subsequent failure of the #5 hangar bearing.