Allison 250-C20B
NTSB investigations · 31
Matched to the registry by N-number and event date, newest first.
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_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = a.case_mkey
WHERE a.engine_model_code IN ('03081')
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_aircrafts.parquet' a JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = a.case_mkey
WHERE a.engine_model_code IN ('03081')
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 WPR26FA054Accident · 1 fatalClass 3 · FieldPreliminary reportHughes 369D · Pryor, OKOn December 5, 2025, about 0858 central standard time, a Hughes 369D, N161LA, was substantially damaged when it was involved in an accident near Pryor, Oklahoma. The pilot was fatally injured. The helicopter was operated as a Title 14 Code of Federal…NTSB CEN25FA307Accident · 2 fatalClass 3 · FieldFinal reportHughes 369D · West Alton, MOThe pilot’s failure to maintain helicopter clearance from the powerline during the powerline maintenance operation for reasons that could not be determined.NTSB ERA23LA293Accident · Minor injuriesClass 3 · LimitedFinal reportHughes 369D · Waldorf, MDFatigue failure of the overrunning clutch outer race and a subsequent inflight loss of power due to abnormal bending loads as a result of improper reassembly of the clutch subassembly following maintenance and the presence of microcracks on the clutch’s outer…NTSB GAA23WA214Accident · No injuriesClass 5 · ForeignBell 206B · Thetford Mines, CanadaNTSB CEN22LA351Accident · Minor injuriesClass 3 · LimitedFinal reportBell Helicopter Textron 206B · Arcadia, IAMaintenance personnel’s failure to properly torque a fuel control unit B-nut, which resulted in a loss of engine power at low altitude and an impact with terrain.NTSB ERA22LA330Accident · No injuriesClass 3 · LimitedFinal reportBell 206B · Kenton, OHThe pilot’s inadequate fuel management, which resulted in fuel exhaustion and a loss of engine power.NTSB ERA22LA342Accident · No injuriesClass 4 · LimitedFinal reportMesserschmitt-Boelkow-Blohm BO_105S · Daytona Beach, FLThe pilot’s rapid reduction of collective following an in-flight loss of control while lifting from a dolly resulting in a hard landing. Contributing to the loss of control was the pilot’s likely inadequate left anti-torque control pedal input during initial…NTSB CEN21LA102Accident · 1 fatalClass 3 · LimitedFinal reportHughes 369D · Tuckers Crossing, MSThe pilot’s loss of helicopter control when the external saw contacted trees during an attempted emergency landing due to a main rotor transmission oil pressure warning. The reason that the pilot did not release the external saw from the helicopter during the…NTSB GAA19CA457Accident · Minor injuriesData collectionFinal reportBell 206 · Dukedom, TNThe pilot's failure to maintain clearance from wires during an agricultural application flight.NTSB GAA19CA186Accident · Serious injuriesData collectionFinal reportBell 206 · Valley Center, CAThe ground crew’s attachment of the load fill hose to the helicopter without telling the pilot, which resulted in a loss of helicopter control during takeoff.NTSB WPR18CA100Accident · Minor injuriesData collectionFinal reportHughes 369D · Pacific Ocean, Marshall IslandsAn in-flight mechanical malfunction with the helicopter, which necessitated a ditching in the ocean. The reason for the malfunction could be determined because the helicopter sank and was not recovered.NTSB ERA17WA060Accident · 1 fatalForeign investigationAgusta A109A II · Varese, ItalyOn November 19, 2016, at 1316 universal coordinated time, an Augusta A109 A II, N109W, was destroyed when it impacted terrain while navigating near Varese, Italy. An Italian passenger was fatally injured and the Italian certificated pilot and Swiss passenger…NTSB CEN17FA012Accident · 2 fatalField investigationFinal reportFairchild Hiller FH 1100 · Lino Lakes, MNThe separation of the main rotor assembly due to mast bumping.NTSB WPR16FA072Accident · 1 fatalField investigationFinal reportBell 206B · Honolulu, HIThe in-flight failure of the engine-to-transmission drive shaft due to improper maintenance, which resulted in low main rotor rpm and a subsequent hard landing to water.NTSB WPR13CA406Accident · Minor injuriesData collectionFinal reportHughes 369D · Kalalau, HIThe entanglement of a tarp in the helicopter's main rotor from a nearby trash bundle.NTSB CEN13LA487Accident · No injuriesLimited investigationFinal reportBell 206B · Albers, ILFuel contamination, which resulted in the loss of engine power.NTSB CEN13CA281Accident · No injuriesData collectionFinal reportHughes 369D · Camdenton, MOThe piece of wood/tree that contacted the main rotor blade during the low altitude tree-trimming flight.NTSB ERA13LA057Accident · 2 fatalLimited investigationFinal reportHughes 369D · Corning, NYThe pilot’s failure to maintain adequate altitude while conducting a power line aerial observation flight, which resulted in an in-flight collision with wires. Contributing to the accident was the pilot’s lack of total experience in the type of operation.NTSB ERA12CA304Accident · Serious injuriesData collectionFinal reportBell 206B · Hershey, PAThe pilot's diverted attention while performing aerial application at low altitude, which resulted in controlled flight into terrain. Contributing to the accident was the pilot’s failure to adjust the control friction to the position he was accustomed.NTSB CEN12LA141Accident · No injuriesLimited investigationFinal reportBell 206B · Irving, TXA total loss of engine power due to fuel exhaustion as a result of the pilot’s inadequate fuel planning.NTSB WPR10CA364Accident · No injuriesData collectionFinal reportBell 206 B II · Big Bear City, CAThe pilot's failure to maintain directional control during the landing approach.NTSB ERA09LA031Accident · Serious injuriesLimited investigationFinal reportHughes 369D · Carroll Township, PAA total loss of engine power due to the improper assembly of the compressor discharge tubes to the combustion liner.NTSB MIA07LA148Accident · No injuriesLimited investigationFinal reportBell 206B3 · Lakeland, FLThe failure of company maintenance personnel to replace the tail rotor drive shafts following tail rotor blade damage in 1999, the failure of maintenance personnel to replace the tail rotor drive shafts in 2004, following their knowledge that the tail rotor…NTSB MIA06LA126Accident · No injuriesLimited investigationFinal reportFairchild Hiller FH-1100 · Navarre, FLThe inadequate manufacturing of the plates of the tail rotor tension-torsion bar assembly resulting in fatigue failure.NTSB MIA05CA160Accident · No injuriesData collectionFinal reportBell 206B3 · Titusville, FLThe flight instructor's improper flare resulting in a hard landing and main rotor contact with tail boom.NTSB BFO94LA155Accident · No injuriesLimited investigationFinal reportHughes 369D · Butler, PAThe malfunction of the emergency fuel vent and the exhaustion of the fuel supply which resulted in the loss of engine power.NTSB LAX94LA076Accident · No injuriesLimited investigationFinal reportHughes 369D · Waimea, Kauai, HIAn inadequate engine compressor cleaning procedure specified in the manufacturer's service letter, which resulted in the total loss of engine power due to contamination, blockage, and collapse of the fuel nozzle inlet screen. Factors in the accident were: the…NTSB DEN85LA079Accident · No injuriesLimited investigationFinal reportHiller FH-1100 · Steamboat Sprng, COPurpose of the flt was to test the helicopter after an annual inspection. The plt flew the acft for aprx 1 hour from the left seat with the acft owner in the right seat before the owner deplaned the acft and the plt moved into the right seat. Plt stated that…NTSB NYC84LA204Accident · No injuriesLimited investigationFinal reportHughes 500D · Bedford, PAAccording to the plt, the helicopter took off with under 200 lbs of fuel indicating on the fuel gage. Fifteen minutes after takeoff at 125 ft AGL the engine out warning system indicated an engine failure. The acft began to rotate about its vetical axis and…NTSB FTW80DA117Accident · No injuriesClosedBell 206B · Intracstl Cy, LANTSB DEN79FA046Accident · No injuriesClosedBell 206B · Gobernador, NM
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