NTSB investigations: Allison 250 SER 250HP
267 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.
Cases, 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_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 ('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."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" 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 DCA08WA059Accident · 1 fatalForeign investigationBell 206 L-1 · Muanda, Congo - KinshasaNTSB SEA08CA091Accident · No injuriesData collectionFinal reportBell 206B · Oxnard, CAThe pilot's failure to maintain clearance with terrain during an aerial application.NTSB ANC08LA040Accident · Minor injuriesLimited investigationFinal reportBell 206L · Nikolai, AKThe pilot's inadequate compensation for wind conditions, and an inadvertent loss of tail rotor effectiveness while maneuvering. A factor contributing to the accident was wind gusts.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.NTSB DFW07LA171Accident · Serious injuriesLimited investigationFinal reportBell 206L-1 · Marks, MSThe loss of control and hard landing as result of the loss of tail rotor effectiveness. A contributing factor was the prevailing dark night conditions.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.NTSB SEA07LA021Accident · 1 fatalLimited investigationFinal reportHughes 369E · Jensen, UTThe pilot's failure to maintain clearance with the transmission wires due to an inadquate visual lookout while maneuvering during a search and rescue flight.NTSB MIA06LA123Accident · Minor injuriesLimited investigationFinal reportBell 206B · Pompano Beach, FLThe pilot's improper landing flare during a precautionary landing. A factor in the accident was the unusual noise as a result of an improper repaired air conditioner compressor system.NTSB CHI06FA173Accident · 1 fatalField investigationFinal reportBell 206B · Walford, IAThe pilot's failure to maintain clearance from powerlines. The powerlines were a factor.NTSB LAX06LA220Accident · Minor injuriesLimited investigationFinal reportBell 206B · Chino Hills, CAA loss of aircraft control for undetermined reasons.NTSB SEA06LA124Accident · No injuriesLimited investigationFinal reportHughes 369D · Salt Lake City, UTA loss of rotor rpm for undetermined reasons, resulting in a hard landing on top of the commercial building over which the helicopter was working.NTSB DFW06CA142Accident · Serious injuriesData collectionFinal reportBell 47G-4A · Sheridan, ARThe pilot's inadequate fuel management, which resulted in fuel exhaustion and a subsequent loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing.NTSB SEA05CA173Accident · No injuriesData collectionFinal reportHughes 369E · Donnelly, IDThe pilot's failure to maintain clearance of a tree during a landing attempt due to loss of visibility from a self induced brown-out condition. Contributing factors were the pilot's failure to identify a hazardous landing site, and the tree.NTSB LAX05CA263Accident · No injuriesData collectionFinal reportHughes 369D · North Las Vegas, NVthe pilot's improper use of the cyclic flight control and the flight instructor's inadequate supervision of the flight.NTSB CHI05LA218Accident · Serious injuriesLimited investigationFinal reportEnstrom 480 · Goshen, INGround resonance experienced by the pilots.NTSB DFW05LA180Accident · No injuriesLimited investigationFinal reportBell 430 · Gulf of MexicoThe helicopter's tail rotor blade's contact with an unknown object during landing.NTSB DFW05CA044Accident · No injuriesData collectionFinal reportBell B206L-1 · Patterson, LAThe loss of engine power due to fuel starvation resulting from the pilot's failure to activate the fuel boost pumps prior to takeoff. A contributing factor was that the helicopter was at an airspeed and altiutude combination (below height/velocity curve)…NTSB DFW05LA017Accident · Serious injuriesLimited investigationFinal reportBell 206B · S.Timbelier 187The loss of engine power for undetermined reasons.NTSB FTW04FA186Accident · 1 fatalField investigationFinal reportBell 206 L-1 · Cameron, LAThe helicopter's in-flight collision with water for undetermined reasons.NTSB ATL04TA137Accident · No injuriesFinal reportBell 206B · Graysville, ALThe pilot's inadequate compensation for a tailwind and his failure to maintain directional control resulting in a loss of tail rotor effectiveness. A factor was the pilot's improper in-flight decision to hover with a tailwind.NTSB SEA04LA102Accident · No injuriesLimited investigationFinal reportBell 206B · Prosser, WAThe pilot's failure to maintain clearance with the power lines while maneuvering.NTSB FTW04FA029Accident · 1 fatalField investigationFinal reportBell 407 · High Island 573The loss of engine power due to the failure of the 3rd stage turbine wheel and subsequent catastrophic failure of the turbine assembly.NTSB FTW04CA030Accident · Minor injuriesData collectionFinal reportBell 206L1 · Paris, ARThe pilot's failure to remove the main rotor tiedown prior to engine startup. Contributing factors were the pressure induced by conditions/events, improper preflight of the aircraft, and dark night conditions,NTSB SEA04LA005Accident · 2 fatalLimited investigationFinal reportBell 206B · Swisshome, ORThe pilot's failure to maintain clearance from power lines while maneuvering. The power line, mountainous terrain with high obstructions (thick trees and underbrush) and the operators failure to maintain a "hazard map" as indicated in their procedures manual…NTSB CHI03FA259Accident · 3 fatalField investigationFinal reportBell 206L-3 · E.I. 276, LAThe inadequate compensation for crosswind conditions and the directional control not obtained/maintained by the pilot during takeoff. Contributing factors were the crosswind and the planned approach to position the helicopter with a crosswind in order to…NTSB ANC03LA082Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Ketchikan, AKThe improper installation of a bolt in the gas generator governor linkage by company maintenance personnel, which resulted in a loss of the bolt, a loss of engine power while maneuvering, and subsequent forced landing and collision with trees. Factors…NTSB CHI03LA196Accident · No injuriesLimited investigationFinal reportBell 206B3 · Lansing, ILThe dynamic rollover encountered by the pilot. Factors were the inadequate remedial action by the pilot due to his failure to prevent the rollover, and the inadequate facility with regard to the design of the landing platform.NTSB IAD03LA015Accident · No injuriesLimited investigationFinal reportBell 206L1 · Albany, KYThe pilot's inadequate in-flight planning, which resulted in an angle of approach in relative wind conditions conducive to a loss of helicopter tail rotor effectiveness. A factor was the obstacles surrounding the landing field.NTSB SEA02LA135Accident · Serious injuriesLimited investigationFinal reportMcDonnell Douglas 369D · Medford, ORPower loss during cruise flight for undetermined reasons. Factors include mountainous terrain and trees.NTSB NYC02TA123Accident · No injuriesFinal reportHughes 369D · Jeffersontown, KYThe flight instructor's loss of lateral control when his foot slipped off the rudder pedal during a power-off, running landing.NTSB FTW02LA176Accident · No injuriesLimited investigationFinal reportBell 206L-3 · Dover, ARThe pilot's failure to maintain clearance with trees during the approach. A contributing factor was dark night light conditions.NTSB LAX02LA178Accident · Minor injuriesLimited investigationFinal reportBell 206L-1 · Meadview, AZthe pilot's failure to maintain distance and altitude during landing approach, resulting in the helicopter striking the ground during approach.NTSB ATL02FA062Accident · 2 fatalField investigationFinal reportEurocopter France AS355 F1 · Savannah, GAThe pilot's failure to follow operating procedures and, experienced spatial disorientation while attempting a night landing to an offshore platform. A factor was a dark night.NTSB ATL02FA003Accident · 2 fatalField investigationFinal reportBell 206B · N. Wilkesboro, NCThe pilot's failure to maintain visual lookout and clearance above obstacles, which resulted in a collision with power lines and subsequent loss of control and collision with terrain.NTSB LAX02LA007Accident · Serious injuriesLimited investigationFinal reportHughes 369D · Kahoolawe Isle, HIInadequate visual surveillance by the pilot before takeoff resulting in liftoff with a deplaning passenger still partially aboard the helicopter. A factor in the accident was the operator's inadequate procedures.NTSB ANC01LA030Accident · No injuriesLimited investigationFinal reportBell 206L-1 · Tyonek, AKThe pilot's failure to maintain adequate tail rotor clearance while maneuvering to land.NTSB FTW01FAMS1Accident · 1 fatalMissing aircraftFinal reportBell 206B · High Island 116undetermined, missing aircraft.NTSB LAX01LA013Accident · Minor injuriesLimited investigationFinal reportBell 206L-1 · Grand Canyon, AZThe pilot's in-flight loss of control during liftoff due to his improper planning and decisions. Related factors were the high density altitude and helicopter weight condition, and the lack of a suitable takeoff area.NTSB CHI00FA266Accident · 1 fatalField investigationFinal reportFairchild Hiller FH-1100 · Valparaiso, INThe in-flight fracture of the main rotor mast and the separation of the main rotor. Factors to the accident were the corroded main rotor mast that resulted in fatigue.NTSB MIA00WA142Accident · Minor injuriesForeign investigationBell 206A · Chascomus, ArgentinaNTSB IAD00LA002Accident · Minor injuriesLimited investigationFinal reportLoral GZ-22 · Mogadore, OHThe failure of the flight control system manufacturer to meet design (hardness) specifications that resulted in stripped splines.NTSB MIA00FA003Accident · 2 fatalField investigationFinal reportBell 206B · Centreville, ALThe pilot's inadequate preflight inspection of the helicopter's fuel system resulting in an in-flight loss of engine power due to fuel exhaustion as a result of overboard porting of fuel when the airframe fuel filter was left in the 'drain and locked'…NTSB CHI99LA298Accident · No injuriesLimited investigationFinal reportBell 206L · Cape Girardeau, MOThe inadequate preflight planning/preparation by the pilot, in that the auxiliary power unit cord was not removed. The brick wall was a contributing factor.NTSB SEA99LA092Accident · No injuriesLimited investigationFinal reportHughes 369D · Shelton, WAThe pilot's failure to maintain rotor RPM during an autorotation.NTSB NYC99FA140Accident · 4 fatalField investigationFinal reportSikorsky S-76A · Jackson, KYthe failure of the PIC to adequately supervise the SIC, and maintain a positive climb. Factors were the fog and dark night.NTSB MIA99LA107Accident · No injuriesLimited investigationFinal reportFairchild Hiller FH-1100 · Opp, ALa loss of engine power due to the failure of the engine to transmission drive shaft flex coupling, resulting in an in-flight collision with a vehicle.NTSB ANC99TA029Accident · Minor injuriesFinal reportBell 206L-1 · Barrow, AKThe pilot's misjudged flare while landing. Factors associated with the accident were whiteout conditions, and the snow-covered terrain.NTSB LAX99TA088Accident · No injuriesFinal reportMcDonnell Douglas 369D · Las Vegas, NVThe pilot's failure to properly judge the landing flare maneuver during a practice autorotative landing resulting in a hard landing.NTSB SEA99FA018Accident · Minor injuriesField investigationFinal reportHughes 369D · Taholah, WATurbine wheel failure as the result of a low-cycle fatigue crack that initiated in a beyond-limits grinding gouge. Factors include improper maintenance by unknown parties and tree stumps that prohibited a successful emergency landing.NTSB FTW99LA026Accident · No injuriesLimited investigationFinal reportBell 206B · Matagorda 713The pilot's loss of control due to his failure to untie ground straps. A factor was his inadequate preflight inspection.