Final NTSB investigations: Lycoming IO-540-AE1A5
150 cases on aircraft whose registry engine model is Lycoming IO-540-AE1A5. 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
| 2007 | 5 |
|---|---|
| 2008 | 4 |
| 2009 | 6 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 9 |
| 2013 | 8 |
| 2014 | 6 |
| 2015 | 10 |
| 2016 | 5 |
| 2017 | 11 |
| 2018 | 8 |
| 2019 | 14 |
| 2020 | 5 |
| 2021 | 14 |
| 2022 | 8 |
| 2023 | 8 |
| 2024 | 11 |
| 2025 | 9 |
| 2026 | 3 |
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.\"completionStatus\" = 'Completed'
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41899'))
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."completionStatus" = 'Completed'
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41899'))
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 CEN26LA256Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Coralville, IAThe pilot’s failure to maintain clearance from a power line during a low-level aerial application flight.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 WPR26LA083Accident · No injuriesClass 4 · LimitedFinal reportRobinson R44 · Parkman, WYThe pilots’ failure to maintain separation while conducting air work in a common operational area. Contributing to the accident was the pilots’ divided attention associated with the mission activity and unreliable radio communications.NTSB CEN25LA389Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Decatur, TXThe pilot’s loss of control during an off-airport, pinnacle landing, and the flight instructor’s inadequate supervision of the instructional flight.NTSB WPR25LA262Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Burlington, WAThe pilot’s failure to see and avoid the light pole, which resulted in a collision with the light pole and subsequent ground impact.NTSB WPR25LA239Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Ponderosa Pines, MTThe pilot’s improper pedal application during an approach to a hover.NTSB ERA25LA267Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Inlet, NYThe pilot’s failure to maintain control of the helicopter during the landing.NTSB CEN25LA237Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Pecos, TXThe pilot’s failure to maintain aircraft control during gusty wind conditions.NTSB ANC25LA064Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Palmer, AKThe pilot’s diverted attention during takeoff in flat light conditions, which resulted in a loss of visual reference with terrain.NTSB ERA25LA240Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Hawesville, KYThe pilot’s failure to maintain clearance from power lines during low-level agricultural spray operations.NTSB WPR25LA110Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Las Vegas, NVThe pilot’s loss of helicopter control after the door opened during takeoff. Contributing to the accident was the pilot’s failure to confirm that the door was properly closed before departure.NTSB CEN25LA105Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Edgemont, SDThe pilot’s failure to properly identify the proper anchor point for the supplemental harness and the crew’s incorrect use of the restraint system structure as an anchor point, which resulted in the separation of the structure.NTSB WPR25LA034Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Durkee, ORThe pilot's inadequate performance planning, which resulted in insufficient engine power to transition into an out-of-ground-effect hover at a high gross weight.NTSB ERA24LA393Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Ravenel, SCThe pilot’s failure to maintain clearance from terrain, which resulted in the right skid contacting the ground and a subsequent rollover.NTSB WPR24LA307Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Basin, MTThe pilot’s decision to continue performing a high-performance takeoff in a full throttle and low-rotor-rpm condition, which resulted in a loss of control and subsequent impact with terrain.NTSB ANC24LA079Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Palmer, AKThe pilot's failure to follow the operator’s procedure manual and attempted to land at a remote landing zone in high wind conditions. Contributing factor was the pilot’s decision to not conduct a fly over of the landing site to determine wind condition which…NTSB WPR24LA241Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Herriman, UTA hard landing following a total loss of engine power due to fuel starvation as a result of the improper idle setting of the helicopter’s engine. Contributing to the loss of engine power was the instructor’s reduction of engine power past that recommended by…NTSB ANC24FA063Accident · 3 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 · Kekaha, HIAn encounter with turbulence due to downdraft winds that resulted in mast bumping and an in-flight breakup.NTSB CEN24LA252Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · New Florence, MOThe pilot’s failure to maintain proper altitude/clearance from a dead tree limb during an aerial application flight.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 ERA24LA236Accident · No injuriesClass 4 · LimitedFinal reportRobinson R44 · Gilbertsville, KYThe pilot's failure to maintain control of the helicopter while attempting to take off from sloping terrain.NTSB ERA24LA171Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · South Kingstown, RIThe pilot’s failure to maintain clearance from the water while maneuvering at low altitude.NTSB ERA24LA118Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Miami, FLTail rotor contact with an unseen object while performing a precautionary landing to a closed helipad at night.NTSB WPR24LA092Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Calexico, CAThe pilot's failure to maintain clearance from power lines during an aerial application flight.NTSB CEN23LA341Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Arthur, ILThe pilot’s failure to maintain clearance from trees during a low-level aerial application flight.NTSB CEN23LA326Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Charles City, IAThe pilot’s improper preflight of the helicopter to ensure that it was within the loading and performance limitations that resulted in settling and impact with terrain during initial climb.NTSB CEN23LA306Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Pocahontas, ILA reported loss of engine power for undetermined reasons.NTSB ERA23LA228Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Bradenton, FLThe pilot’s failure to maintain adequate rotor rpm during landing which resulted in a premature landing on uneven ground and a subsequent rollover.NTSB ANC23LA032Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Skwentna, AKThe pilot's failure to maintain adequate altitude/clearance from terrain while maneuvering in adverse weather conditions, which resulted in a dynamic rollover.NTSB WPR23LA145Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Elko, NVThe pilot’s failure to maintain sufficient altitude and airspeed in gusting tailwind conditions that resulted in an unrecoverable descent and impact with terrain.NTSB CEN23FA142Accident · 2 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 II · Port Allen, LAThe pilot’s decision to continue the visual flight rules flight into deteriorating weather conditions, which resulted in spatial disorientation and the loss of aircraft control.NTSB CEN22LA400Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · San Isidro, TXThe pilot’s improper decision to conduct an autorotation with a tailwind, which resulted in a hard landing and substantial damage.NTSB WPR22LA299Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Palmer, AKThe pilot’s failure to maintain lateral control during an off-field landing, which resulted in loss of control and an impact with terrain.NTSB CEN22LA350Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Marshall, MOThe pilot’s failure to adequately survey a field for obstructions prior to a low-level aerial application pass, which resulted in an impact with a powerline.NTSB WPR22LA267Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Cedar City, UTThe student pilot’s failure to maintain rotor rpm and airspeed and the flight instructor's inadequate remedial action to regain helicopter control during the straight-in autorotation which resulted in a hard landing.NTSB CEN22FA288Accident · 1 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 II · Blackwell, TXThe pilot’s failure to maintain proper altitude and clearance during low-level aerial application, resulting in an in-flight collision with power lines.NTSB WPR22LA220Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Auburn, WAThe student pilot’s loss of helicopter control and the flight instructor’s delayed remedial action while providing hover training which resulted in a dynamic rollover.NTSB ERA22LA188Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Calhoun, GAThe pilot’s failure to maintain clearance from wires during takeoff.NTSB ERA22LA135Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · White Plains, NYThe pilot’s failure to maintain stabilized lateral control during landing in gusty conditions which resulted in a dynamic rollover when the skids contacted the platform unevenly.NTSB ERA22FA098Accident · 4 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 II · Bronson, FLA loss of control due to spatial disorientation as a result of the noninstrument-rated pilot’s improper decision to attempt a visual flight rules flight at night into an area of known reduced visibility due to fog.NTSB CEN22LA034Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Fort Davis, TXThe pilot’s encounter of a downdraft from which there was insufficient altitude to recover.NTSB ERA22FA010Accident · 1 fatalClass 3 · FieldFinal reportRobinson Helicopter R44 II · Cornwall, NYThe non-instrument-rated pilot’s continued flight into deteriorating weather conditions, which resulted in a loss of control due to spatial disorientation.NTSB ANC22LA001Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Palmer, AKThe unmanned aircraft pilot’s failure to yield the right of way to the helicopter.NTSB ERA21LA387Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Miami, FLThe pilot’s loss of helicopter control after landing. Also causal was the pilot’s intentional operation of the helicopter without the required training, experience, and endorsements.NTSB CEN21LA369Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Wheeling, ILA partial loss of engine power for reasons that could not be determined based on available information.NTSB CEN21LA349Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Randolph, WIThe pilot’s failure to maintain clearance from power lines during a low-level aerial application flight.NTSB CEN21LA339Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · West Liberty, IAThe pilot’s failure to see and avoid a wire while maneuvering at low altitude during an aerial application flight, resulting in a collision with the wire.NTSB ERA21LA295Accident · 2 fatalClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Point Harbor, NCThe noncertificated pilot’s decision to continue visual flight rules flight into instrument meteorological conditions, which resulted in spatial disorientation over a large body of water and a high velocity impact with the water. Contributing to the accident…NTSB CEN21FA330Accident · 1 fatalClass 3 · FieldFinal reportRobinson R44 · Elgin, MNThe pilot’s decision to operate the helicopter under powerlines, which resulted in a main rotor blade striking a powerline, causing the helicopter to descend from a low altitude and impact terrain.NTSB ERA21LA292Accident · Serious injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Princeton, KYThe pilot’s inadequate preflight planning in that he failed to accurately determine the takeoff weight of the helicopter, which resulted in exceeding the helicopter’s maximum weight capability.