NTSB investigations: Lycoming O-540-F1B5
73 cases on aircraft whose registry engine model is Lycoming O-540-F1B5. 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 per year
| 2000 | 1 |
|---|---|
| 2006 | 1 |
| 2007 | 1 |
| 2008 | 1 |
| 2009 | 3 |
| 2010 | 2 |
| 2011 | 1 |
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 4 |
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 1 |
| 2018 | 7 |
| 2019 | 5 |
| 2020 | 6 |
| 2021 | 4 |
| 2022 | 7 |
| 2023 | 8 |
| 2024 | 7 |
| 2025 | 1 |
| 2026 | 5 |
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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('42353'))
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 ('42353'))
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 ERA27LA017Accident · Minor injuriesClass 4 · LimitedInvestigation openRobinson Helicopter R44 · Kinnelon, NJNTSB ANC26LA082Accident · Minor injuriesClass 4 · LimitedInvestigation openRobinson Helicopter R44 · Macedonia, IANTSB CEN26LA289Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 Raven 1 · Scribner, NEThe pilot's failure to maintain clearance from power lines while maneuvering at low-level altitude during an agricultural operation.NTSB CEN26LA259Accident · No injuriesClass 3 · LimitedPreliminary reportRobinson Helicopter R44 · Adair, IAOn July 18, 2026, about 1440 central daylight time, a Robinson Helicopter Company R44, N484AT, was substantially damaged when it was involved in an accident near Adair, Iowa. The pilot was not injured. The helicopter was operated as a Title 14 Code of Federal…NTSB ANC26LA051Accident · Minor injuriesClass 3 · LimitedPreliminary reportRobinson R44 · Pembroke Pines, FLOn June 13, 2026, about 1318 eastern daylight time, a Robinson R44 Raven I helicopter, N336SG, was substantially damaged when it was involved in an accident at the North Perry Airport (HWO), Hollywood, Florida. The pilot and three passengers sustained minor…NTSB ERA26LA048Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Cookeville, TNThe pilot’s failure to maintain an appropriate decent rate during approach, resulting in a hard landing.NTSB CEN24LA343Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Grand Forks, NDThe student pilot’s failure to maintain helicopter control which resulted in impact with the ground. Contributing to the outcome was the flight instructor’s delayed remedial action.NTSB ANC24LA077Accident · No injuriesClass 3 · LimitedFinal reportRobinson R44 · Honolulu, HIA failure of the flex plate yoke flange assembly due to incorrectly torqued bolts. Contributing was the maintenance personnel’s inadequate inspection of the tail rotor flex plate assembly.NTSB CEN24LA303Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Bryant, IAA loss of engine power during takeoff for reasons that could not be determined, resulting in impact with terrain.NTSB WPR24LA251Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Carlsbad, CAThe pilot’s failure to maintain lateral control of the helicopter while departing with a crosswind, which resulted in a dynamic rollover.NTSB ERA24LA166Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Key Biscayne, FLA loss of engine power for reasons that could not be determined.NTSB GAA24WA123Accident · No injuriesClass 5 · ForeignRobinson Helicopter R44 · Suben, AustriaNTSB CEN24LA135Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Knox City, TXThe pilot’s failure to maintain directional control during takeoff, which resulted in a rollover and an impact with terrain.NTSB ERA24LA079Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Daytona Beach, FLThe UAS operator’s failure to operate within the limitations of the COA that he was using to operate inside class C airspace, which resulted in a collision between the UAS and the helicopter.NTSB OPS24LA011Incident · No injuriesClass 4 · LimitedFinal reportDiamond Aircraft Ind DA20-C1 · North Las Vegas, NVThe local controller’s loss of situational awareness, inadequate provision of traffic advisory or safety alert information, and lack of positive control, that resulted in a near-midair collision.NTSB CEN24LA027Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Rowlett, TXA malfunction of the helicopter’s Engine Monitoring Unit (EMU)/Governor Controller for undetermined reasons. Contributing to the accident was the flight instructor’s failure to turn off the EMU/Governor Controller per the emergency checklist when the…NTSB CEN24LA004Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Hochatown, OKA total loss of engine power during a practice autorotation due to the improper engine idle setting and rigging of the carburetor heat control which resulted in a hard landing.NTSB ERA23LA350Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Immokalee, FLThe flight instructor’s inadequate supervision of the student pilot during hover flight, which resulted in main rotor blade contact with the ground after the student pilot applied a sudden control input.NTSB CEN23LA328Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Hanlontown, IAThe pilot’s failure to maintain clearance from a cable during spray operations.NTSB CEN23LA219Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Pontiac, MIThe flight crew’s inadequate compensation for gusting wind, and the flight instructor’s delayed remedial action, which resulted in impact with the ground.NTSB CEN23LA130Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · De Kalb, TXThe pilot’s inability to maintain control of the helicopter due to his failure to maintain rotor speed. Contributing to the accident was the failure of the helicopter’s low rotor speed warning system.NTSB WPR23LA041Accident · No injuriesClass 3 · LimitedFinal reportCessna 172M · Las Vegas, NVThe student helicopter pilot’s failure to follow the tower controller’s landing instructions, which resulted in a midair collision.NTSB ERA23LA021Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Daytona Beach, FLThe pilot’s misjudged landing point which resulted in a loss of control and collision with terrain.NTSB WPR22LA363Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Cedar City, UTA partial loss of engine power due to a damaged cylinder intake valve and subsequent collision with terrain during an autorotation.NTSB ERA22LA357Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Leghighton, PAThe pilot’s improper recovery from a bounced landing on a slope, which resulted in dynamic rollover.NTSB ERA22LA256Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · North Myrtle Beach, SCThe fractured attachment lug on the forward clutch shaft yoke due to fatigue failure with multiple origins.NTSB CEN22FA151Accident · 2 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 · Rowlett, TXA loss of helicopter control while maneuvering, which resulted in main rotor blade contact with the tailboom in flight, tail boom separation, and an uncontrolled descent.NTSB ERA22LA131Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Miami Beach, FLA loss of engine power due to a stuck valve, which resulted in an autorotation and a hard landing in water.NTSB CEN21LA350Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Waukon, IAThe pilot’s failure to maintain adequate clearance from a powerline during an agricultural application pass.NTSB CEN21LA452Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Mineral Point, WIThe pilot’s failure to see and avoid a wire during an aerial application flight, resulting in a collision with the wire.NTSB ERA21FA200Accident · 1 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 · Wingate, NCThe pilot’s failure to maintain clearance from a power line during a low-level aerial application flight, resulting in tail rotor impact with the power line, a loss of control, and subsequent impact with the ground.NTSB ERA21LA191Accident · 1 fatalClass 3 · LimitedFinal reportRobinson Helicopter R44 · Forkston, PAThe pilot’s inadequate preflight weather planning, which resulted in an inadvertent encounter with instrument meteorological conditions at night, spatial disorientation, and collision with terrain.NTSB CEN21LA095Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Morris, ILThe pilot's inadequate pedal application during liftoff with a tailwind, which resulted in a loss of yaw control and a subsequent impact with terrain.NTSB CEN21LA084Accident · 2 fatalClass 3 · LimitedFinal reportRobinson R44 · Colorado City, TXThe pilot’s loss of control and exceedance of performance and/or structural limitations during low-altitude operations, which resulted in an inflight breakup.. Contributing to the accident was the pilot’s impairment from the effects of tetrahydrocannabinol.NTSB CEN20CA313Accident · No injuriesClass 4 · Data collectionFinal reportRobinson R44 · Dakota, ILThe pilot’s failure to maintain main rotor clearance from a ground obstacle during a landing.NTSB ERA20CA260Accident · No injuriesClass 4 · Data collectionFinal reportRobinson R44 · Whitehall, MDThe pilot's failure to maintain adequate clearance from a known obstacle while landing from a hover.NTSB CEN20CA300Accident · No injuriesClass 4 · Data collectionFinal reportRobinson R44 · Dickeyville, WIThe pilot did not maintain clearance from wires during an aerial application flight.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 GAA19CA509Accident · Serious injuriesData collectionFinal reportRobinson R44 · Cypress Island, WAThe pilot's failure to maintain adequate clearance from a tree while maneuvering at a low altitude.NTSB CEN19LA230Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson R44 · Ida Grove, IAA total loss of engine power during an aerial application flight for undetermined reasons.NTSB CEN19LA174Accident · No injuriesClass 3 · LimitedFinal reportRobinson R44 · Key West, FLThe failure of maintenance personnel to properly secure the right-side tail boom mounting bolts which resulted in the failure of the bolts and an inflight separation of the tail rotor.NTSB WPR19FA123Accident · 3 fatalClass 3 · FieldFinal reportRobinson R44 · Kailua, HIThe helicopter’s encounter with a strong downdraft or outflow boundary while operating at a higher than recommended airspeed in turbulence which resulted in a low-G condition, excessive main rotor flapping, and an in-flight breakup when the main rotor…NTSB GAA19CA124Accident · Serious injuriesData collectionFinal reportRobinson R44 · Santa Maria Island, FLThe pilot's loss of helicopter control while maneuvering at a low altitude after being struck in the head by a bird.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 WPR19LA013Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson R44 · Kaneohe, HIThe pilot’s sudden incapacitation from an undiagnosed heart condition during flight, which resulted in a hard landing.NTSB WPR18LA269Accident · No injuriesClass 3 · LimitedFinal reportRobinson R44 · Wahiawa, HILoss of oil in flight as a result of a loose oil filter adapter which resulted in the pilot initiating an immediate landing to an open field. Contributing to the accident was the pilot's manipulation of the throttle that led to a reduction in rotor rpm, which…NTSB GAA18CA450Accident · Minor injuriesData collectionFinal reportRobinson R44 · Lantana, FLThe student pilot’s improper pitch control during landing, which resulted in a dynamic rollover.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 CEN18FA215Accident · 1 fatalField investigationFinal reportRobinson Helicopter R44 · Oshkosh, WIThe pilot's decision to fly over the river at a low altitude and his failure to maintain clearance with wires during low-level flight.NTSB GAA18CA247Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 · Sonora, TXThe pilot’s failure to maintain clearance from trees while maneuvering at a low altitude.