NTSB investigations
100 cases where the sequence of events included Loss of tail rotor effectiveness.
Cases per year
| 2008 | 10 |
|---|---|
| 2009 | 3 |
| 2010 | 2 |
| 2011 | 7 |
| 2012 | 5 |
| 2013 | 9 |
| 2014 | 8 |
| 2015 | 7 |
| 2016 | 8 |
| 2017 | 11 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 2 |
| 2021 | 8 |
| 2022 | 4 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.\"tier2Number\" = '242' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE \"isDefiningEvent\")) 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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '242' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")) 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 ERA26LA094Accident · Minor injuriesClass 4 · LimitedFinal reportSled Thomas Helicycle · Mobile, ALThe pilot’s failure to maintain yaw control during a crosswind approach, which resulted in a loss of tail rotor effectiveness, an uncommanded spin, hard landing, and subsequent rollover.NTSB ERA25LA204Accident · Minor injuriesClass 3 · LimitedFinal reportEurocopter Deutschland MBB-BK 117 C-1 · Fort Washington, PAMaintenance personnel’s failure to identify and replace damaged rivet nuts at the air conditioning louver assembly, which resulted in the separation of the louver assembly from the helicopter, the louver assembly’s impact with the tail rotor, and subsequent…NTSB ERA25LA059Accident · No injuriesClass 4 · LimitedFinal reportBell 206B · Lakeland, FLThe pilot’s failure to maintain yaw control during a tailwind approach, which resulted in a loss of tail rotor effectiveness, an uncommanded spin, and subsequent hard landing.NTSB WPR25LA006Accident · Minor injuriesClass 4 · LimitedFinal reportAgustawestland AW109SP · Kamas, UTThe pilot’s exceedance of the helicopter’s available power while landing in a confined area, which resulted in a loss of tail rotor effectiveness and a hard landing.NTSB WPR24LA243Accident · No injuriesClass 3 · LimitedFinal reportMcdonnell Douglas Helicopter 369E · Cottonwood, AZThe pilot’s low-speed, high-power maneuvering in high density altitude and near maximum gross weight, which resulted in an uncommanded right yaw due to a loss of tail rotor effectiveness and a subsequent hard landing.NTSB ERA24LA205Accident · No injuriesClass 3 · LimitedFinal reportAirbus Helicopters AS350B3 · Plant City, FLThe pilot’s inadequate yaw control of the helicopter while maneuvering at a low altitude and airspeed, which resulted in a hard landing.NTSB WPR23LA078Accident · Serious injuriesClass 3 · LimitedFinal reportAirbus Helicopters EC 130 T2 · Boulder City, NVThe pilot’s failure to apply anti-torque pedal input in a sufficient, timely, and sustained manner while attempting to arrest a turn during a hover-taxi, which resulted in a loss of directional control. Contributing to the severity of the occupants’ injuries…NTSB ERA22LA431Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R-22 Beta · Nashville, TNA loss of tail rotor effectiveness while hovering in crosswind conditions resulting in the student pilot's loss of control of the helicopter, impact with terrain, and dynamic rollover.NTSB CEN22LA326Accident · No injuriesClass 4 · LimitedFinal reportHelicopteres Guimbal Cabri G2 · Madison, ILLoss of tail rotor effectiveness resulting in an in-flight loss of control.NTSB WPR22FA101Accident · 1 fatalClass 3 · FieldFinal reportMcdonnell Douglas 500N · Newport Beach, CAThe helicopter’s encounter with unanticipated right yaw during a low-altitude, low-airspeed, tight-radius orbit. Contributing to the accident was the pilot’s distraction during the orbit, which resulted in the loss of control, his fatigue due to his early…NTSB CEN22FA086Accident · 2 fatalClass 3 · FieldFinal reportBell 206B · Livingston, TXThe pilot exceeding the yaw control capability of the helicopter for the flight conditions, resulting in a non-mechanical loss of tail rotor effectiveness.NTSB CEN22LA009Accident · Minor injuriesClass 3 · LimitedFinal reportBell 206 · Gonzales, LAThe student pilot’s failure to compensate for an unanticipated right yaw, which resulted in a loss of tail rotor effectiveness and helicopter control.NTSB ERA21LA357Accident · No injuriesClass 4 · LimitedFinal reportEnstrom F28 · Toughkenamon, PAThe pilot’s failure to maintain control of the helicopter during an out-of-ground effect hover in a gusty wind, due to loss of tail rotor effectiveness.NTSB CEN21LA389Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson Helicopter R22 Beta · Arnaudville, LAThe loss of tail rotor drive due to a fatigue failure of the tail rotor gearbox output shaft, which resulted in a loss of control during landing.NTSB GAA21WA247Accident · No injuriesClass 4 · ForeignEnstrom 280FX · Llanfachreth, United KingdomNTSB CEN21LA253Accident · No injuriesClass 4 · LimitedFinal reportSchweizer TH55A/269A · Monroe, LAThe pilot’s failure to maintain yaw control during landing which resulted in a loss of tail rotor effectiveness.NTSB CEN21LA153Accident · No injuriesClass 4 · LimitedFinal reportEurocopter EC130 · Tulsa, OKThe pilot’s improper decision to approach the airport and enter a low altitude hover with a gusting quartering tailwind, which resulted in a loss of tail rotor effectiveness during a turn at a low altitude.NTSB WPR21LA093Accident · No injuriesClass 4 · LimitedFinal reportMcdonnell Douglas Helicopter 369E · Queen Creek, AZThe pilot's uncoordinated flight control inputs while entering a hover, which lead to a loss of aircraft control which resulted in the left skid making contact with the ground, causing the helicopter to roll on its side.NTSB CEN20LA273Accident · Serious injuriesClass 3 · LimitedFinal reportAerospatiale AS355 · Rifle, COA loss of tail rotor effectiveness, the pilot’s subsequent loss of helicopter control, and collision with terrain.NTSB ANC20LA028Accident · Minor injuriesClass 3 · LimitedFinal reportEurocopter EC130 · Kalapana, HIA loss of control due to the fatigue fracture of a tail rotor fenestron blade due to the geometry of the water drain hole positioning on the rib.NTSB WPR20WA081Accident · Minor injuriesForeign investigationOas UH-1H · Williamtown Aerodrome, AustraliaThe government of Australia has notified the NTSB of an accident involving a OAS UH-1H helicopter that occurred on December 07, 2019. The NTSB has appointed a U.S. Accredited Representative to assist the government of Australia's investigation under the…NTSB ERA19LA285Accident · Serious injuriesClass 3 · LimitedFinal reportEnstrom F28 · Bloomsburg, PAThe pilot's failure to maintain proper forward airspeed and power during final approach, which resulted in a loss of tail rotor effectiveness and impact with terrain.NTSB WPR19LA205Accident · Serious injuriesClass 3 · LimitedFinal reportMd Helicopter 369 · Eugene, ORThe left seat pilot’s failure to account for environmental conditions conducive to a loss of tail rotor effectiveness, which resulted in a loss of tail rotor effectiveness and subsequent loss of control.NTSB GAA19CA463Accident · No injuriesData collectionFinal reportHughes 269A · Springfield, TNThe pilot’s failure to maintain helicopter control and a loss of tail rotor effectiveness while hover-taxiing and turning toward a taxiway in gusting crosswind conditions, which resulted in a dynamic rollover.NTSB WPR19LA194Accident · Serious injuriesClass 3 · LimitedFinal reportBell 47G 3B 1 · Mosby, MTThe pilot’s failure to account for environmental conditions conducive to a loss of tail rotor effectiveness, which resulted in a loss of tail rotor effectiveness and subsequent loss of control. Contributing to the accident was the pilot’s inappropriate…NTSB ERA19LA171Accident · No injuriesClass 3 · LimitedFinal reportBell 206 · New York, NYThe pilot's failure to compensate for adverse wind on final approach, which resulted in a loss of tail rotor effectiveness and aircraft control.NTSB GAA18CA508Accident · Minor injuriesData collectionFinal reportRobinson R22 · Corvallis, ORThe student helicopter pilot’s inadequate torque pedal application during practice approaches with a tailwind, which resulted in a loss of yaw control and a subsequent hard landing.NTSB CEN18LA314Accident · Serious injuriesLimited investigationFinal reportAirbus EC 130 T2 · Mullen, NEThe pilot’s inadequate and incorrect antitorque pedal application during a tight, decelerating turn downwind, which resulted in a loss of yaw control.NTSB ERA18LA192Accident · Minor injuriesClass 3 · LimitedFinal reportSchweizer 269D · Stewartstown, PAThe pilot's inability to maintain yaw control while transitioning to an out of ground effect hover due to a loss of tail rotor effectiveness.NTSB GAA18CA117Accident · No injuriesData collectionFinal reportHughes Helicopters 369 · Wrightwood, CAThe pilot’s high altitude, high gross weight landing with insufficient tail rotor thrust resulting in a loss of tail rotor effectiveness.NTSB CEN18FA001Accident · 1 fatalField investigationFinal reportBrantly B 2B · Midland, MIThe pilot's failure to maintain control of the helicopter, which resulted in a loss of tail rotor effectiveness, and his failure to promptly initiate the proper recovery technique, which resulted in a descent that could not be arrested before impacting the…NTSB ERA17LA305Accident · Serious injuriesLimited investigationFinal reportMD Helicopter 369 · Lawrenceville, GAThe pilot's inadequate compensation for wind conditions during the approach to landing, which resulted in a loss of helicopter control due to a loss of tail rotor effectiveness.NTSB GAA17CA495Accident · No injuriesData collectionFinal reportBell 206 · Minden, NVThe pilot’s failure to maintain helicopter control during landing due to a loss of tail rotor effectiveness.NTSB CEN17LA267Accident · Serious injuriesLimited investigationFinal reportRobinson Helicopter R44 · Ireland, INThe pilot's failure to apply the proper procedures to recover from a loss of tail rotor effectiveness, which resulted in a loss of control during an aerial application turn.NTSB WPR17LA143Accident · Serious injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Ronan, MTThe pilot's failure to maintain adequate airspeed, which resulted in a loss of tail rotor effectiveness during a low-altitude orbiting maneuver and a subsequent hard landing.NTSB GAA17CA393Accident · No injuriesData collectionFinal reportBell 206 · Dixon, KYThe pilot’s failure to see and avoid power lines while maneuvering at a low altitude. Contributing to the accident was the pilot’s failure to adequately identify hazards to flight during agricultural application operation planning.NTSB GAA17CA376Accident · No injuriesData collectionFinal reportRobinson Helicopter R22 · Kelso, WAThe flight instructor’s delayed remedial action, which resulted in a loss of helicopter control due to a loss of tail rotor effectiveness.NTSB GAA17CA369Accident · No injuriesData collectionFinal reportBell 206B · Entiat, WAThe pilot’s failure to secure a loose item inside the cockpit that interfered with antitorque pedal control and led to a loss of helicopter control due to a loss of tail rotor effectiveness.NTSB GAA17CA251Accident · No injuriesData collectionFinal reportBender Joseph KIT Rotoway · Wheatland, WYThe pilot's decision to operate the helicopter in gusting wind and high-density altitude conditions and his positioning of the helicopter such that it resulted in a right quartering tailwind, which resulted in a loss of helicopter control due to a loss of…NTSB ERA17LA168Accident · Minor injuriesLimited investigationFinal reportRobinson R44 · Newton, NCThe pilot's failure to maintain an adequate airspeed during out-of-ground-effect maneuvering at a low airspeed with a tailwind, which resulted in a loss of helicopter control due to a loss of tail rotor effectiveness.NTSB GAA17CA237Accident · No injuriesData collectionFinal reportBrantly B 2B · Earl Park, INThe pilot’s failure to recognize that he was operating in the weathercock stability flight regime of loss of tail rotor effectiveness, which resulted in a loss of directional control during the execution of a right pedal turn.NTSB CEN17WA069Incident · No injuriesForeign investigationSikorsky S92 · North Sea, UK, United KingdomOn December 28, 2016, G-WNSR, a Sikorsky S-92A helicopter had a heavy landing on the deck of an offshore platform in the North Sea. The 11 persons on-board were not injured. This accident/incident investigation is under the jurisdiction and control of the…NTSB ERA17LA046Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R22 · West Chester, PAThe flight instructor's decision to continue the practice autorotation in known gusting wind conditions, which resulted in a hard landing and roll over.NTSB WPR16LA142Accident · No injuriesLimited investigationFinal reportBell UH 1H · Mt. Adams, WAThe pilot’s failure to maintain yaw control as he slowed the helicopter during a landing approach, which resulted in the loss of helicopter control due to the loss of tail rotor effectiveness.NTSB GAA16CA296Accident · No injuriesData collectionFinal reportRobinson Helicopter R22 · Cahokia/St. Louis, ILThe flight instructor's delayed remedial action and his failure to remain vigilant as the helicopter entered the weathercock stability region, in gusting wind conditions, resulting in loss of tail rotor effectiveness and ground impact.NTSB GAA16CA201Accident · Minor injuriesData collectionFinal reportHelicycle/Morrisey RR RM-1 · Denver, COThe pilot's failure to maintain control of the helicopter yaw while operating in conditions conducive to loss of tail rotor effectiveness, resulting in an uncommanded rapid right yaw and ground impact.NTSB ERA16CA160Accident · No injuriesData collectionFinal reportBell 206 · Baltimore, MDThe pilot's inadequate compensation for the wind while hovering out of ground effect, which resulted in a loss of tail rotor effectiveness.NTSB GAA16LA117Accident · No injuriesLimited investigationFinal reportHelicopteres Guimbal Cabri · Beaumont, TXThe pilot's inadequate compensation for wind during a hover-taxi and his failure to maintain helicopter control due to a loss of tail rotor effectiveness.NTSB WPR16LA056Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R22 · Las Vegas, NVThe loss of helicopter control as a result of the loss of tail rotor effectiveness.NTSB CEN16LA047Accident · No injuriesLimited investigationFinal reportEurocopter EC120B · Goshen, INThe failure of the Thomas coupling at the interface with the main gear box tail rotor output shaft, which resulted in the helicopter's loss of tail rotor control.