NTSB investigations
182 cases where NTSB found Prop/rotor parameters.
Cases per year
| 2008 | 15 |
|---|---|
| 2009 | 17 |
| 2010 | 8 |
| 2011 | 9 |
| 2012 | 16 |
| 2013 | 15 |
| 2014 | 12 |
| 2015 | 15 |
| 2016 | 13 |
| 2017 | 16 |
| 2018 | 12 |
| 2019 | 9 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 2 |
| 2026 | 2 |
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\", '01062052')) 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", '01062052')) 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 CEN26LA168Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Mount Blanco, TXThe pilot’s failure to maintain proper main rotor rpm during a low-level turn, which resulted in the main rotor rpm drooping, a loss of control at an altitude too low for recovery, and a subsequent impact with terrain.NTSB ERA26LA119Accident · No injuriesClass 4 · LimitedFinal reportTabor W Coates AR-1 · Kissimmee, FLThe pilot’s failure to obtain the proper rotor rpm during the takeoff roll which resulted in a loss of control.NTSB CEN25LA380Accident · Minor injuriesClass 4 · LimitedFinal reportBell 407 · Decatur, TXThe instructor candidate’s erroneous operation of the throttle during an autorotation from altitude with power recovery, which resulted in a hard landing.NTSB ERA25LA237Accident · Minor injuriesClass 3 · LimitedFinal reportGyro Technic GT-VX2 · Swanzey, NHThe pilot’s failure to maintain rotor rpm of the gyroplane during a low approach, while distracted by other aircraft in the airport traffic pattern, which resulted in the pilot’s decision to perform an off-runway landing.NTSB WPR24LA262Accident · No injuriesClass 4 · LimitedFinal reportHiller UH-12E · Bonners Ferry, IDThe pilot’s improper selection of a landing site, which resulted in a main rotor strike. Contributing to the accident was the pilot’s improper performance planning and altitude selection over water, which resulted in an rpm droop.NTSB CEN24FA248Accident · 1 fatalClass 3 · FieldFinal reportRotorway Scorpion 133 · Andale, KSThe pilot’s abrupt control inputs, which resulted in a low-G condition, main rotor mast bumping, and subsequent severing of the tailboom by the main rotor blades.NTSB WPR24FA200Accident · 2 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 II · Bluestem, WAThe pilot’s failure to manage main rotor rpm during an autorotation, which resulted in a loss of helicopter control. Contributing to the accident was a loss of power for reasons that could not be determined.NTSB ANC24LA039Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R22 Beta · Kailua-Kona, HIThe flight instructor’s failure to implement the correct action for low rotor RPM recovery.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 CEN23LA389Accident · No injuriesClass 4 · LimitedFinal reportMcdonnell Douglas Heli 530FF · Liberty Hill, TXThe pilot’s improper recovery from a practice autorotation resulting in a hard landing. Contributing to the accident was the instructor’s inadequate supervision of the pilot receiving instruction.NTSB ERA23LA287Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Myrtle Beach, SCThe pilot’s failure to maintain control of the helicopter during a hover taxi, which resulted in a rollover.NTSB CEN23LA199Accident · No injuriesClass 4 · LimitedFinal reportBell Helicopter Textron Canada 407 · Abbeville, LAThe pilot’s failure to maintain proper helicopter control during autorotation that resulted in an abnormal ground contact which caused the subsequent main rotor strike on the tail boom that severed the tail rotor driveshaft. Contributing to the accident was…NTSB ERA23LA146Accident · No injuriesClass 4 · LimitedFinal reportHughes 269A · Titusville, FLThe pilot’s failure to maintain adequate main rotor RPM during an autorotation which resulted in a hard landing and subsequent rotor blade strike of the tail boom.NTSB ANC23LA024Accident · No injuriesClass 3 · LimitedFinal reportEnstrom F-28C · Anchorage, AKThe pilot’s failure to maintain main rotor rpm on takeoff, which resulted in a forced run-on landing.NTSB CEN22LA402Accident · No injuriesClass 3 · LimitedFinal reportMD Helicopters 369E · Pearland, TXThe pilot receiving instruction’s failure to maintain aircraft control, and the flight instructor’s delayed remedial action, which resulted in a hard landing.NTSB ERA22LA269Accident · No injuriesClass 4 · LimitedFinal reportWalter S Johnson III AR-1 · Butler, PAThe pilot’s failure to monitor rotor disk speed on takeoff, which resulted in blade flapping and the main rotor blades striking the gyroplane’s tail assembly.NTSB CEN22LA078Accident · Minor injuriesClass 4 · LimitedFinal reportBell Helicopter Textron Canada 407 · Bridgeport, TXThe pilot’s failure to maintain adequate main rotor RPM during an autorotation which resulted in a hard landing. Contributing to the accident was the pilot’s improper placement of the throttle during the initial practice power-on recovery autorotation.NTSB WPR22FA053Accident · 1 fatalClass 3 · FieldFinal reportRussell W Dyer Vortex · Lakeport, CAThe pilot’s loss of control for reasons that could not be determined and the delayed remedial action to recover from the power pushover event.NTSB CEN21LA187Accident · No injuriesClass 3 · LimitedFinal reportEurocopter EC120 · LeRoy, KSThe contamination of the fuel injection manifold filter due to improper maintenance, resulting in a partial loss of engine power during cruise flight. Contributing to the accident was the pilot’s delayed autorotation, which resulted in insufficient main rotor…NTSB CEN21LA155Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Dunn, TXThe loss of rotor RPM for reasons that could not be determined based on available evidence.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 CEN20CA395Accident · No injuriesClass 4 · Data collectionFinal reportBell 407 · Fort Worth, TXThe flight instructor’s delay in rolling the throttle to the fly position during a practice autorotation maneuver that resulted in a hard landing.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 CEN20LA261Accident · Minor injuriesClass 3 · LimitedFinal reportEnstrom 280 · Des Moines, IAThe partial loss of rotor and engine speed during approach for landing, which resulted in an autorotation and impact with terrain. The reason for the partial loss of rotor and engine speed could not be determined based on the available evidence. Contributing…NTSB CEN20LA286Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson R44 · Welsh, LAA partial loss of engine power while in flight due to corrosion of engine components, which resulted in a loss of control and a subsequent impact with terrain.NTSB GAA20CA044Accident · No injuriesData collectionFinal reportRichard B Carpenter AR-1 · Brooksville, FLThe pilot's failure to attain the proper rotor speed before takeoff, which resulted in the rotor blade striking the rudder. Contributing to the accident was the pilot's failure to abort the takeoff in a timely manner.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 ERA19TA213Accident · Minor injuriesClass 3Final reportContinental Copters Tomcat MK6C · Franklin, KYThe pilot’s failure to maintain main rotor rpm after takeoff, which resulted in a collision with terrain.NTSB CEN19LA187Accident · No injuriesClass 3 · LimitedFinal reportRobinson R22 · Danbury, TXA failed electrical relay, which provided an improper indication of a governor and clutch problem, which resulted in the pilot conducting a precautionary landing during which he failed to maintain sufficient main rotor speed.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 GAA19CA226Accident · No injuriesData collectionFinal reportGuimbal Cabri · McMinnville, ORThe pilot's improper landing flare during a turning, full-down autorotation, which resulted in a lower-than-normal rotor rpm, a faster-than-normal ground run speed, and the subsequent loss of directional control, a runway excursion, and a roll-over.…NTSB CEN19LA067Accident · No injuriesLimited investigationFinal reportBell 47G · Belen, NMThe pilot's failure to maintain adequate main rotor speed while the helicopter was in an out-of-ground effect hover.NTSB GAA19CA063Accident · No injuriesData collectionFinal reportRobinson R44 · Knox City, TXThe pilot's failure to maintain adequate airspeed with a tailwind, which resulted in the helicopter settling with power, and his subsequent incorrect collective application while attempting to recover, which resulted in a loss of helicopter control due to a…NTSB CEN19FA009Accident · 1 fatalClass 2 · FieldFinal reportRobinson R22 · Fulton, MOA total loss of engine power due to carburetor icing, the pilot's delayed application of carburetor heat, and the pilot's delay in entering an autorotation following the loss of engine power, which resulted in a main rotor stall due to low rotor rpm and an…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 GAA18CA424Accident · No injuriesData collectionFinal reportBell 206 · New Castle, INThe pilot's failure to ensure that the fill hose was disconnected from the helicopter before takeoff, which resulted in the fill hose striking the tail rotor and the subsequent loss of tail rotor effectiveness. Contributing to the accident was inadequate…NTSB GAA18CA408Accident · No injuriesData collectionFinal reportRobinson R44 · Rulo, NEThe pilot's improper collective application, which resulted in low rotor rpm during the takeoff climb and a subsequent ground collision. Contributing to the accident was the pilot’s self-induced pressure to complete the operation.NTSB GAA18CA250Accident · Minor injuriesData collectionFinal reportMichael R Alexander Mosquito XE · Iron Station, NCThe noncertificated pilot’s decision to practice hovering the helicopter in a confined space, which resulted in the tail rotor striking a tree.NTSB ERA18LA135Accident · Serious injuriesClass 3 · LimitedFinal reportHeard Alan E Mosquito XE · Albion, NYThe pilot's inadvertent, improper configuration of the engine fuel system, which resulted in an excessively lean air-to-fuel ratio and resulted in a loss of engine power; and the pilot's subsequent failure to maintain main rotor rpm following the loss of…NTSB GAA18CA159Accident · No injuriesData collectionFinal reportHughes 269 · Jacksonville, FLThe pilot’s failure to maintain rotor rpm during a practice autorotation, which resulted in ground contact and a dynamic rollover.NTSB ERA18LA095Accident · 1 fatalLimited investigationFinal reportRobert Snyder Autogyro Calidus · Beaufort, SCThe gyroplane pilot's failure to maintain rotor speed and aircraft control as he was attempting to return to the runway during a low-altitude simulated engine-out maneuver.NTSB GAA18LA131Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R22 · Charleston, SCThe flight instructor’s abrupt evasive maneuver to avoid a reported unmanned aerial system, which resulted in a loss of forward airspeed and settling with power and a subsequent collision with trees and terrain.NTSB WPR18MA087Accident · 5 fatalClass 3 · MajorFinal reportEurocopter EC130 · Peach Springs, AZA loss of tail rotor effectiveness, the pilot’s subsequent loss of helicopter control, and collision with terrain during an approach to land in gusting, tailwind conditions in an area of potential downdrafts and turbulence.NTSB GAA18CA114Accident · No injuriesData collectionFinal reportWayne Miller Sport Copter II · Van Nuys, CAThe pilot’s decision to takeoff in gusting wind conditions with insufficient rotor rpm.NTSB WPR18LA041Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson Helicopter R22 · Truckee, CAThe flight instructor’s failure to execute a power recovery from a non-stabilized autorotative descent, which resulted in a hard landing.NTSB WPR17LA211Accident · Serious injuriesLimited investigationFinal reportRobinson Helicopter R22 · Long Beach, CAThe student pilot's failure to maintain rotor rpm during the crosswind landing approach and his subsequent improper decision to initiate an autorotation instead of applying corrective control inputs after the helicopter experienced normal airframe vibration.…NTSB ERA17MA316Accident · 4 fatalClass 2 · MajorFinal reportEurocopter Deutschland MBB BK 117 · Hertford, NCA failure of the rear bearing in the No. 2 engine, which (1) created multiple and likely unexpected and confusing cockpit indications, resulting in the pilot's improper diagnosis and subsequent erroneous shutdown of the No. 1 engine, and (2) the resulting…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.