NTSB investigations
25 cases where NTSB found Main rotor system, general.
Cases per year
| 2008 | 3 |
|---|---|
| 2009 | 1 |
| 2010 | 2 |
| 2011 | 2 |
| 2012 | 2 |
| 2013 | 4 |
| 2014 | 1 |
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f.\"findingCode\", '01046200')) 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01046200')) 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 WPR25LA010Accident · No injuriesClass 4 · LimitedFinal reportEnstrom Helicopter 280C · Vale, ORThe pilot’s failure to maintain engine and rotor rpm during takeoff, that resulted in a hard landing.NTSB CEN24LA013Accident · No injuriesClass 3 · LimitedFinal reportMagni M24 · Mount Sterling, ILThe pilot’s failure to maintain gyroplane control on the downwind leg, which resulted in impact with terrain. Contributing to the accident was the pilot’s distraction.NTSB CEN22LA318Accident · Serious injuriesClass 3 · LimitedFinal reportHiller UH12E · Becker, MNThe in-flight failure of the main rotor mast hub due to several undetected fatigue fractures.NTSB ERA21LA126Accident · No injuriesClass 3 · LimitedFinal reportBell 206 · Pahokee, FLA loss of main rotor rpm for reasons that could not be determined, which resulted in an autorotation and a subsequent hard landing and rollover.NTSB ERA17LA257Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R44 · Myrtle Beach, SCA loss of available power to the main rotor due to a fractured exhaust pushrod and housing, which allowed engine oil to coat the V-belts. Contributing to the accident was the pilot's decision to continue the tour and his failure to maintain adequate rotor rpm…NTSB WPR16LA069Accident · Minor injuriesLimited investigationFinal reportBell 47G 3B 1 · Carson City, NVThe pilot's failure to maintain sufficient main rotor rpm, which resulted in a loss of helicopter control and a dynamic rollover.NTSB CEN16LA040Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R22 Beta · Sugarland, TXThe overspeed of the main rotor system for reasons that could not be determined based on the available information.NTSB GAA15LA191Accident · Minor injuriesLimited investigationFinal reportCelier Xenon RST · Livingston, TXThe pilot’s loss of directional control after aborting the takeoff due to a grinding noise coming from the main rotor area, which resulted in a runway excursion.NTSB WPR15LA178Accident · No injuriesLimited investigationFinal reportGarlick Helicopters UH 1H · Cove, ORThe failure of the engine-to-transmission drive shaft coupling assembly due to a fatigue fracture of one of its attachment bolts, which resulted in a loss of power to the main rotor.NTSB CEN15FA126Accident · 2 fatalField investigationFinal reportEnstrom 280FX · Erie, COAn in-flight failure of the helicopter's #2 main rotor spindle due to undetected fatigue cracking, which resulted in an in-flight breakup. Contributing to failure were the nonconforming thread root radius of the spindle and the manufacturer's failure to…NTSB CEN14LA465Accident · No injuriesLimited investigationFinal reportBell 206B · Spring, TXThe pilot's distraction by a cell phone call, which led to his failure to perform an exterior check of the helicopter and resulted in a tie-down strap remaining attached to the main rotor during the engine start.NTSB WPR13FA417Accident · 2 fatalField investigationFinal reportBell UH-1V · Cordes Lakes, AZThe pilot's improper maintenance on the helicopter’s main rotor blade pitch control system, which resulted in an in-flight loss of main rotor blade pitch control, mast bumping, and mast failure.NTSB CEN13LA437Accident · Serious injuriesLimited investigationFinal reportEnstrom F-28A · Danbury, TXThe loss of collective control for reasons that could not be determined due to extensive fire damage.NTSB ERA13FA273Accident · 3 fatalField investigationFinal reportBell Helicopter Textron 206L-1 · Manchester, KYThe pilot’s loss of helicopter control due to spatial disorientation when he inadvertently encountered night, instrument meteorological conditions, which resulted in the in-flight separation of the main rotor and tailboom.NTSB WPR13FA243Accident · Minor injuriesField investigationFinal reportHiller UH-12E · Wenatchee, WAFatigue failure of the six bolts that secured the bevel gear to the first stage planetary carrier, which caused the transmission to seize while the helicopter and main rotor were still operating.NTSB ERA12TA538Accident · Minor injuriesFinal reportBell 407 · Bath, NYThe pilot's improper recovery from an in-flight upset, which resulted in the main rotor striking and separating the tail boom. Contributing to the accident was the helicopter manufacturer's failure to warn pilots of unanticipated and unequal aft cyclic…NTSB WPR12LA219Accident · No injuriesLimited investigationFinal reportEnstrom F28 · Twin Falls, IDThe pilot's inability to maintain helicopter control during cruise flight due to the failure of the No. 2 main rotor Lamiflex bearing. Contributing to the accident was the pilot's decision to operate the helicopter with a known deficiency and the helicopter’s…NTSB WPR12LA039Accident · Serious injuriesLimited investigationFinal reportWilliams Helicopter UH-1H · Grand Canyon, AZThe loss of main rotor power due to a main rotor transmission failure from a lack of lubrication.NTSB CEN11GA218Accident · Minor injuriesFinal reportHughes 369D · Meeker, COMain rotor contact with the tail boom resulting in tail boom separation.NTSB CEN10FA509Accident · 3 fatalField investigationFinal reportBell Helicopter Textron 206L-1 · Walnut Grove, ARThe pilot’s loss of aircraft control, due to spatial disorientation, resulting in the in-flight separation of the main rotor and tail boom.NTSB CEN10IA438Incident · No injuriesIncident investigationFinal reportBell 206 · Gulf of Mexico, LAThe loss of main rotor rpm during takeoff for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies.NTSB WPR09LA184Accident · No injuriesLimited investigationFinal reportSikorsky CH-54B · Corvallis, ORThe improper assembly of main rotor blade control components by the operator's maintenance personnel, which resulted in the main rotor blade's divergent path and their contact with the tail rotor drive shaft during ground operation following landing.NTSB ERA09LA107Accident · Minor injuriesLimited investigationFinal reportMoore David DM-1 · Salters, SCA hard landing following an autorotation that resulted from the separation of the red main rotor blade cap that led to the uncontrolled movement of the cyclic, autorotation and a hard landing.NTSB ANC08LA083Accident · No injuriesLimited investigationFinal reportBell UH-1B · Iliamna, AKThe failure of company maintenance personnel to ensure the helicopter was properly maintained, resulting in a severe in-flight vibration due to collective bounce. Contributing to the accident was loose and worn bearings on the helicopter's stabilizer bar,…NTSB MIA08LA106Accident · No injuriesLimited investigationFinal reportEurocopter France AS350 B2 · Hiram, GAThe failure of the starflex arm during engine run-up due to inadequate inspection by maintenance personnel.