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NTSB investigations: Allison 250 SER 250HP, TX

17 cases on aircraft whose registry engine model is Allison 250 SER 250HP. 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.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19682026

Where

Latest cases

Query with SQL

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" = 'TX' 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 ('03002', '03003')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

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\" = 'TX' 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 ('03002', '03003'))
  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" = 'TX' 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 ('03002', '03003'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run 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 CEN24FA049Accident · 2 fatalClass 3 · FieldFinal reportMD Helicopters 600 · Sterling City, TXThe pilot’s failure to maintain clearance from a power line pole’s static arm during forecasted gusting wind conditions, un-forecasted light turbulence, and un-forecasted low-level wind shear conditions, resulting in main rotor blade contact with the static…Nov 29, 2023 · N745MB · Substantial damage NTSB CEN21LA139Accident · No injuriesClass 4 · LimitedFinal reportHughes 369 · Kaufman, TXThe pilot’s failure to maintain clearance from a power line during low-level maneuvering.Feb 26, 2021 · N58431 · Substantial damage NTSB CEN20LA328Accident · 3 fatalClass 3 · LimitedFinal reportBell 206 · Marathon, TXThe in-flight loss of helicopter control for reasons that could not be determined based on the available evidence.Aug 8, 2020 · N284S · Destroyed NTSB CEN12LA258Accident · Minor injuriesLimited investigationFinal reportBell 206B · Amarillo, TXThe pilot's failure to maintain helicopter control during landing in gusty wind conditions associated with a thunderstorm, which resulted in a loss of tail rotor effectiveness.Apr 26, 2012 · N2068X · Substantial damage NTSB CEN11LA646Accident · No injuriesLimited investigationFinal reportBell 206B · Spicewood, TXThe pilot did not maintain adequate rotor rpm during a low-altitude maneuvering flight.Sep 15, 2011 · N3181J · Substantial damage NTSB DFW08IA002Incident · No injuriesIncident investigationFinal reportBell Helicopter Textron 206L-1 · Galveston, TXThe loss of tail rotor control during initial takeoff climb due to the fracture of a tail rotor blade as result of impact with a foreign object.Oct 6, 2007 · N3899C · Minor damage NTSB DFW07LA111Accident · Minor injuriesLimited investigationFinal reportBell 206B · Horseshoe Bay, TXThe pilot's loss of control as result of dynamic rollover while attempting to takeoff. Facrots were the landing skid becoming snagged and the soft terrain.May 13, 2007 · N905WP · Substantial damage NTSB FTW98LA260Accident · No injuriesLimited investigationFinal reportBell 206B · Corpus Christi, TXThe failure of the tail rotor drive shaft due to the separation of a bolt at one of the drive shaft disc couplings for an undetermined reason, which resulted in the pilot's inability to maintain directional control during landing.Jun 7, 1998 · N16814 · Substantial damage NTSB FTW93LA228Accident · No injuriesLimited investigationFinal reportBell 206B · Pearland, TXPilot's failure to maintain proper rotor RPM, the delayed flare, and improper touchdown. Factors were total failure of the power turbine due to oil starvation to the #8 bearing assembly.Aug 4, 1993 · N16814 · Substantial damage NTSB FTW90LA083Accident · Serious injuriesLimited investigationFinal reportBell 206B · Pearland, TXDynamic rollover resultant from improper takeoff techniques used by the rated pilot, and inadequate supervision by the company check pilot.Mar 19, 1990 · N5016F · Substantial damage NTSB FTW89FA133Accident · 2 fatalField investigationFinal reportAerospatiale AS-350-D · Galveston, TXFailure of both pilots to see-and-avoid the other aircraft (inadequate visual lookout).Jul 11, 1989 · N3595B · 2 aircraft · Destroyed NTSB FTW85FA287Accident · Serious injuriesField investigationFinal reportBell 206L-1 · Saginaw, TXThe helicopter had landed in the road to pick up an injured auto accident patient. The plt made an aerial check prior to landing to the west in a calm wind condition. The patient was loaded in a secure stretcher and all was ready for liftoff. The plt stated…Jul 15, 1985 · N32GT · Destroyed NTSB FTW83FA066Accident · 3 fatalField investigationFinal reportBell 206B · San Antonio, TXThe acft departed brackettville at 0715 & at 0740 contacted uvalde UNICOM for their wx. When informed that uvalde was "zero-zero" the flt continued east. The acft was later observed & heard flying above the low indefinite ceiling shortly before impacting the…Dec 23, 1982 · N206H · Destroyed NTSB FTW82FA204Accident · 2 fatalField investigationFinal reportBell 206B · Fairfield, TXWitnesses observed the helicopter flying northbound while traveling parallel and just east of a north-south highway. Reportedly, it enter an autorotative landing approach, crossed over the highway and impacted in an open field on a westerly heading after…May 31, 1982 · N1482W · Destroyed NTSB FTW82DA013Accident · Minor injuriesClosedBell 206L-1 · Sabine, TXOct 19, 1981 · N1076S · Substantial damage NTSB FTW81FA131Accident · Minor injuriesClosedBell 206L-1 · Mesquite, TXAug 15, 1981 · N3887W · Substantial damage NTSB FTW68A0079Accident · 1 fatalClosedBell 206A · Saginaw, TXMar 13, 1968 · N6270N · Substantial damage