NTSB investigations: Lycoming IO-540 series
59 cases on aircraft whose registry engine model is Lycoming IO-540 series, where the defining event was Loss of control in flight. 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
| 2008 | 5 |
|---|---|
| 2009 | 5 |
| 2010 | 3 |
| 2011 | 4 |
| 2012 | 5 |
| 2013 | 3 |
| 2014 | 5 |
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 7 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 2 |
| 2025 | 2 |
| 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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41530', '41585')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e.\"isDefiningEvent\" AND e.\"tier2Number\" = '240'))
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 ('41530', '41585')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '240'))
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 CEN26LA317Accident · Minor injuriesClass 4 · LimitedInvestigation openRobinson Helicopter R44 II · Natchez, MSNTSB WPR25FA147Accident · 2 fatalClass 3 · FieldPreliminary reportPaul Berkovitz Vans RV-10 · Simi Valley, CAOn May 3, 2025, about 1350 Pacific daylight time, an experimental amateur-built Van’s RV-10, N626PB, was destroyed when it was involved in an accident near Simi Valley, California. The pilot and passenger were fatally injured. The airplane was operated as a…NTSB CEN25LA073Accident · Serious injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Buras, LAThe pilot’s failure to maintain control during a hover taxi with a quartering tailwind.NTSB WPR23LA170Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Van Nuys, CAThe pilot’s failure to maintain lateral control of the helicopter, which resulted in a hard landing.NTSB WPR23FA137Accident · 1 fatalClass 3 · FieldFinal reportCessna 182S · Alcova, WYThe airplane’s encounter with low level wind shear associated with moderate turbulence, which resulted in a loss of airplane control.NTSB CEN22LA243Accident · Minor injuriesClass 4 · LimitedFinal reportMaule MT-7-235 · Flasher, NDThe pilot’s loss of control during a takeoff from a narrow gravel road, resulting in a collision with a fixed obstacle.NTSB ERA22LA236Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Nashua, NHThe flight instructor’s failure to maintain control of the helicopter during the takeoff, which resulted in a dynamic rollover.NTSB WPR22LA132Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Howe, IDThe pilot’s failure to maintain adequate rotor rpm while descending with a gusting tailwind condition, which resulted in a loss of helicopter control.NTSB WPR21LA359Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Phoenix, AZThe student pilot's failure to maintain helicopter control while making a clearing turn which resulted in a hard landing.NTSB WPR21LA204Accident · Serious injuriesClass 3 · LimitedFinal reportMcclure B J Glasair III · Eugene, ORThe pilot’s loss of airplane control during the approach to landing due to an asymmetrical flap deployment for reasons that could not be determined based on the available evidence.NTSB WPR20LA310Accident · Serious injuriesClass 3 · LimitedFinal reportVans RV4 · Clovis, NMThe pilot’s failure to maintain lateral control during initial climb due to distraction, which resulted in an in-flight upset and impact with terrain.NTSB ERA20LA323Accident · No injuriesClass 4 · LimitedFinal reportCessna 182 · Hollywood, FLThe pilot's failure to maintain directional control during a crosswind takeoff, which resulted in a collision with airport lights and a sign.NTSB ERA20CA252Accident · Minor injuriesClass 4 · Data collectionFinal reportFurlong CA-6 · Manville, NJA loss of directional control on takeoff for undetermined reasons.NTSB CEN20FA070Accident · 3 fatalClass 3 · FieldFinal reportPiper PA60 · Springfield, ILThe pilot’s failure to follow the instrument landing system (ILS) course guidance during the instrument approach.NTSB CEN20FA002Accident · 1 fatalClass 3 · FieldFinal reportPiper Aerostar 602P · Kokomo, INThe pilot's exceedance of the airplane’s critical angle of attack following a dual engine power loss caused by the line service technician fueling the airplane with the wrong fuel, which resulted in an aerodynamic stall and subsequent loss of control.…NTSB ERA19FA113Accident · 3 fatalField investigationFinal reportCessna 182 · Louisburg, NCThe pilot's spatial disorientation and loss of airplane control following takeoff in night instrument meteorological conditions.NTSB CEN19FA004Accident · 2 fatalField investigationFinal reportPiper PA32RT · Poolville, TXThe pilot's loss of airplane control as a result of spatial disorientation and the exceedance of the structural capabilities of the airplane. Contributing to the accident was the pilot's limited experience in instrument conditions.NTSB WPR18FA253Accident · 1 fatalClass 2 · FieldFinal reportCommander 114 · Jean, NVThe pilot failed to maintain adequate speed while maneuvering at a low attitude during night and entered an aerodynamic stall and subsequent spin.NTSB ERA18FA187Accident · 2 fatalField investigationFinal reportRobinson R44 · Williamsburg, VAThe pilot's failure to safely operate the helicopter due to his impaired cognitive and physical abilities, which resulted in a loss of control.NTSB ERA18LA184Accident · 1 fatalLimited investigationFinal reportSwearingen SX300 · Daytona Beach, FLThe pilot's failure to maintain adequate airspeed during landing, which led to the airplane exceeding its critical angle-of-attack, experiencing an aerodynamic stall and hard landing, which resulted in a landing gear collapse, loss of directional control, and…NTSB ANC18LA032Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R44 · Fairbanks, AKThe pilot's failure to maintain helicopter control while in a hovering turn, which resulted in a collision with obstacles.NTSB GAA18CA140Accident · Minor injuriesData collectionFinal reportRobinson Helicopter R44 · Woodland, CAThe pilot’s distraction due to her malfunctioning iPad, which led to her inadvertent forward cyclic application.NTSB WPR18FA084Accident · 2 fatalField investigationFinal reportCessna 182T · Santee, CAThe pilot's decision to take off into instrument meteorological conditions that resulted in spatial disorientation, and his exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall.NTSB ERA18FA016Accident · 2 fatalField investigationFinal reportPiper PA 32 · Morrison, TNThe pilots' loss of control during a missed approach in night instrument meteorological conditions as a result of spatial disorientation.NTSB CEN17FA075Accident · 1 fatalField investigationFinal reportFields Steen Skybolt · Era, TXThe pilot’s loss of airplane control while conducting aerobatic flight maneuvers with insufficient altitude to recover.NTSB GAA16CA488Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 II · Cedar City, UTThe flight instructor’s delayed remedial action while providing hover instruction in gusting wind conditions, which resulted in dynamic roll-over.NTSB GAA16CA385Accident · No injuriesData collectionFinal reportRockwell International 114 · Munday, TXThe pilot's failure to maintain directional control during takeoff, which resulted in an aborted takeoff, runway excursion, collision with a fence, and substantial damage.NTSB GAA16CA110Accident · Minor injuriesData collectionFinal reportPiper PA32RT · Melfa, VAThe pilot's inadequate compensation for a gusting crosswind during landing, which resulted in an aerodynamic stall, impact with a structure, and subsequent postimpact fire.NTSB GAA16CA019Accident · No injuriesData collectionFinal reportMaule M 7-235C · Mankato, MNThe pilot's failure to maintain directional control during the go-around, which resulted in a collision with terrain.NTSB WPR15CA059Accident · Serious injuriesData collectionFinal reportCessna 182T · Wendover, UTThe pilot's failure to maintain situational awareness during a turn which resulted in a loss of airplane control.NTSB WPR15CA006Accident · No injuriesData collectionFinal reportMaule MX 7-235 · Big Creek, IDThe pilot's failure to maintain aircraft control while on final approach with shifting wind conditions.NTSB ERA14LA330Accident · 1 fatalLimited investigationFinal reportZubair S Khan Raven · Mattituck, NYThe pilot's failure to ensure that the airplane was loaded within its calculated center of gravity limits, which resulted in longitudinal instability and a subsequent unrecoverable stall.NTSB WPR14FA172Accident · 1 fatalField investigationFinal reportNBB Glasair III · Young, AZThe noninstrument-rated pilot’s decision to enter instrument meteorological conditions, which resulted in the loss of airplane control.NTSB CEN14CA223Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 II · Liberty, MOThe pilot's failure to maintain directional control while operating in gusty wind conditions at a low altitude.NTSB CEN14FA042Accident · 2 fatalField investigationFinal reportPiper PA-32R-301 · Kirksville, MOA loss of control due to spatial disorientation. Contributing to the accident were the private pilot's impairment due to a sedating antihistamine and both pilots' fatigue.NTSB CEN14FA014Accident · 2 fatalField investigationFinal reportPiper PA 32R-301 · Huntsville, ARThe noninstrument-rated pilot’s continued flight into an area of known rain with reduced visibility and his failure to maintain airplane control while maneuvering the airplane after entering these conditions.NTSB WPR13LA188Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Ocean Shores, WAThe pilots’ loss of helicopter control during the approach to landing.NTSB WPR12CA431Accident · Minor injuriesData collectionFinal reportRobinson Helicopter R44 II · McMinnville, ORThe pilot's aggressive takeoff maneuver, which resulted in a loss of control.NTSB CEN12LA529Accident · No injuriesLimited investigationFinal reportPiper PA32RT · Palo Pinto, TXThe pilot's failure to maintain directional control and a proper pitch attitude and airspeed while performing a go-around.NTSB CEN12CA202Accident · No injuriesData collectionFinal reportSmith Aerostar 601P · Casterville, TXThe pilot did not maintain control of the airplane while circling to land.NTSB CEN12FA139Accident · 2 fatalField investigationFinal reportRobinson R44 II · Centerville, LAThe pilot allowed the helicopter to settle with power while maneuvering at low altitude.NTSB CEN12CA140Accident · No injuriesData collectionFinal reportPiper PA-32RT-300 · Angle Fire, NMThe pilot did not maintain control of the airplane during the takeoff in gusting crosswind conditions.NTSB CEN12FA091Accident · 1 fatalField investigationFinal reportRobinson Helicopter R44 II · Hackensack, MNThe helicopter's sudden yaw and subsequent impact with the water for reasons that could not be determined during postaccident examination of the helicopter and its systems.NTSB ERA11FA412Accident · 2 fatalField investigationFinal reportCessna 182S · Erwin, NCThe pilot’s loss of control due to spatial disorientation while maneuvering in dark night conditions.NTSB CEN11LA399Accident · 1 fatalLimited investigationFinal reportPiper PA-36-300 · Highmore, SDThe pilot did not maintain control of the airplane while maneuvering at low altitude.NTSB ERA11FA272Accident · 1 fatalField investigationFinal reportRobinson Helicopter R44 II · Indiana, PAThe pilot's operation of the helicopter at a low-forward airspeed out of ground effect, which resulted in the helicopter’s loss of translational lift and tail rotor authority and the pilot’s subsequent loss of helicopter control.NTSB CEN11LA066Accident · 1 fatalLimited investigationFinal reportGearn Geary D Swearingen SX300 · Milford, IAA loss of control for undetermined reasons.NTSB ERA11LA048Accident · 2 fatalLimited investigationFinal reportBean R E/R B Weld Glasair III · Winchester, TNThe pilot's inadvertent climb and entry into instrument meteorological conditions during a course reversal, which resulted in spatial disorientation and a loss of control.NTSB CEN10CA369Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 II · Austin, TXThe pilot's failure to maintain directional control of the helicopter, resulting in impact with trees. Contributing to the accident was the pilot's failure to ensure the door was properly secured prior to flight.NTSB CEN10CA082Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 II · Abilene, TXThe pilot's failure to maintain directional control during the air taxi with shifting winds.