NTSB investigations: Lycoming IO-540 series, CA
88 cases on aircraft whose registry engine model is Lycoming IO-540 series. 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
| 1967 | 1 |
|---|---|
| 1976 | 1 |
| 1978 | 3 |
| 1979 | 1 |
| 1980 | 3 |
| 1981 | 1 |
| 1982 | 2 |
| 1984 | 1 |
| 1985 | 2 |
| 1987 | 1 |
| 1988 | 1 |
| 1990 | 3 |
| 1991 | 1 |
| 1992 | 4 |
| 1993 | 1 |
| 1996 | 1 |
| 1997 | 1 |
| 1999 | 1 |
| 2000 | 3 |
| 2001 | 4 |
| 2002 | 4 |
| 2004 | 2 |
| 2005 | 3 |
| 2006 | 5 |
| 2007 | 3 |
| 2008 | 2 |
| 2009 | 2 |
| 2010 | 6 |
| 2011 | 2 |
| 2012 | 1 |
| 2013 | 2 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 1 |
| 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.\"eventStateOrRegion\" = 'CA' AND c.\"eventCountry\" = 'USA'
AND 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'))
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."eventStateOrRegion" = 'CA' AND c."eventCountry" = 'USA'
AND 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'))
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 WPR26LA228Accident · Minor injuriesClass 3 · LimitedPreliminary reportLancair Legacy 2000 · Los Angeles, CAOn June 16, 2026, about 0906 Pacific daylight time, an experimental amateur built Lancair Legacy 2000, N84BZ, was substantially damaged when it was involved in an accident near Los Angeles, California. The pilot sustained minor injuries. The airplane was…NTSB 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 WPR24LA111Accident · Minor injuriesClass 4 · LimitedFinal reportPiper Aerostar 601P · Grass Valley, CAThe pilot’s failure to maintain directional control in a gusting wind condition.NTSB WPR23LA363Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-32-300 · Needles, CAAn encounter with windshear during the initial climb after takeoff, resulting in a loss of control and a subsequent hard landing.NTSB WPR23LA216Accident · No injuriesClass 3 · LimitedFinal reportCessna 172R · Santa Monica, CAA failure of the nose wheel upper torque link bolt, which resulted in a loss of steering control. Contributing to the accident were maintenance personnel’s failure to inspect and replace the fractured bolt and the pilot’s oversight of the bolt during his…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 WPR22LA271Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA-32-301 · San Jose, CAThe pilot’s inadequate preflight inspection and fuel management, which resulted in fuel starvation, a total loss of engine power, and an impact with terrain.NTSB WPR22LA232Accident · No injuriesClass 4 · LimitedFinal reportMaule MX-7-235 · Copperopolis, CAThe pilot’s failure to maintain lateral control of the airplane during takeoff in gusting wind.NTSB WPR22FA044Accident · 1 fatalClass 3 · FieldFinal reportJahnke Lionel G Glasair III · Big Bear City, CAThe pilot’s failure to maintain clearance from mountainous terrain for reasons that could not be determined based on the available information, which resulted in controlled flight into terrain.NTSB WPR20LA135Accident · 1 fatalClass 3 · LimitedFinal reportPiper PA-23-250 · Hemet, CAMaintenance personnel’s failure to properly inspect and replace damaged aileron control cables, which resulted in fatigue separation of the aileron control cable and loss of control of the aircraft.NTSB WPR20LA009Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 206 · Stockton, CAA total loss of engine power after takeoff for reasons that could not be determined based on the available information.NTSB WPR19FA188Accident · 1 fatalClass 3 · FieldFinal reportRobinson R44 · Hayward, CAThe pilots’ loss of control during a low altitude maneuver for undetermined reasons, which resulted in impact with terrain.NTSB WPR18LA203Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA32 · Avalon, CAThe pilot's delayed decision to conduct a go-around following an unstable landing approach and long landing.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 WPR17LA188Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R44 II · El Dorado Hills, CAMaintenance personnel's inadequate routine maintenance on the helicopter engine, which led to low cylinder compression, improper magneto timing, and camshaft lobe wear, which subsequently resulted in degraded engine performance.NTSB WPR17FA161Accident · 1 fatalField investigationFinal reportApplegate Panzl S331E · Apple Valley, CAA fatigue failure of the left aileron control rod end during aerobatic flight, which resulted in the pilot's inability to maintain control of the airplane.NTSB WPR17FA105Accident · 2 fatalField investigationFinal reportSocata TB 20 Trinidad · Sierraville, CAThe pilot's decision to continue visual flight rules flight into instrument meteorological conditions, which resulted in controlled flight into mountainous terrain.NTSB WPR17LA054Accident · 1 fatalLimited investigationFinal reportJohnson Harmon Rocket · Corona, CAA total loss of engine power during takeoff due to fuel starvation as a result of a failure of internal components of the fuel servo.NTSB WPR17LA043Accident · Serious injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Mt. Baldy, CAThe pilot's failure to maintain main rotor speed during a low orbiting approach over a confined mountainous area. Contributing to the accident was the pilot's decision to attempt to land in an area that did not allow for a safe exit path under conditions near…NTSB WPR14LA071Accident · No injuriesLimited investigationFinal reportPiper PA 32-301 · Los Angeles, CAThe total loss of engine power during takeoff due to fuel starvation, which resulted from the pilot’s failure to adequately manage the fuel supply.NTSB WPR13LA085Accident · Minor injuriesLimited investigationFinal reportJeremiah Jackson Vans RV-10 · Julian, CAA loss of engine power due to oil starvation as a result of a disconnected oil line. Contributing to the accident was an insufficiently tightened oil line fitting.NTSB WPR13CA021Accident · No injuriesData collectionFinal reportPiper PA24 · Lake Tahoe, CAThe pilot's failure to ensure that the landing gear was extended before landing.NTSB WPR11FA474Accident · 1 fatalField investigationFinal reportPoe G L/Poe S Y 540 · Chualar, CAThe pilot’s incapacitation due either to g-induced loss of consciousness alone or in combination with a cardiac arrhythmia. Contributing to the accident was the pilot’s use of several medications.NTSB WPR11LA179Accident · Serious injuriesLimited investigationFinal reportEagle DW1 · Newman, CAThe pilot’s inadequate visual lookout and failure to maintain clearance from a vehicle during a low-altitude operation.NTSB WPR11FA027Accident · 2 fatalField investigationFinal reportReed Glasair III SH-3R · Lake Mathews, CAThe pilot’s failure to maintain clearance from terrain while maneuvering at low altitude beneath a cloud layer.NTSB WPR10LA458Accident · Serious injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Mammoth, CADynamic rollover of the helicopter during a precautionary landing.NTSB WPR10LA420Accident · Serious injuriesLimited investigationFinal reportRobinson R44 · San Diego, CAThe pilot's failure to utilize carburetor heat during initial climb, which resulted in a loss of engine power due to carburetor icing.NTSB WPR10LA259Accident · 1 fatalLimited investigationFinal reportSocata TB-20 · Happy Camp, CAThe pilot’s inadequate preflight planning and decision to continue to operate under visual flight rules into instrument meteorological conditions, which resulted in an encounter with an embedded thunderstorm and rain showers and moderate to severe turbulence,…NTSB WPR10GA231Accident · 1 fatalFinal reportCessna T206H · Borrego Springs, CAThe pilot suffered a sudden incapacitating event as a result of his severe cardiovascular disease.NTSB WPR10LA195Accident · 1 fatalLimited investigationFinal reportSnow Rocket F1 · Borrego Springs, CAThe pilot's inability to maintain control due to the in-flight failure and separation of the pilot's flight control stick. The reason for the flight control stick failure could not be determined.NTSB WPR09FA385Accident · 1 fatalField investigationFinal reportCessna 182S · Napa, CAThe instrument-rated pilot’s loss of situational awareness and failure to follow the prescribed instrument departure clearance/procedure, which resulted in an in-flight collision with the terrain.NTSB WPR09FA102Accident · 2 fatalField investigationFinal reportSiai-Marchetti SF-260C · Santa Monica, CAThe pilot’s failure to select the proper fuel tank for takeoff, which resulted in a loss of engine power. Contributing to the accident was the pilot's failure to maintain aircraft control while attempting a return to runway maneuver.NTSB LAX08LA183Accident · Minor injuriesLimited investigationFinal reportRobinson R44 II · Topanga, CAThe in-flight separation of the tail rotor gear box for an undetermined reason. Contributing to the accident was the hilly terrain, which was unsuitable for a forced landing.NTSB SEA08LA070Accident · 1 fatalLimited investigationFinal reportKidd Chris Harmon ROC · Maricopa, CAThe pilot's failure to maintain an adequate terrain clearance altitude while maneuvering in mountainous, hilly terrain. Contributing to the accident were hilly terrain, a low ceiling and gusty winds.NTSB LAX08FA028Accident · 3 fatalField investigationFinal reportPiper PA-60-602P · McFarland, CAThe pilot's inadequate preflight preparation and improper fueling procedures that led to fuel exhaustion.NTSB SEA07CA104Accident · No injuriesData collectionFinal reportMaule MT-7-235 · Concord, CAThe pilot's failure to maintain directional control during landing, resulting in a ground loop/swerve and collapse of the nose landing gear. A contributing factor was the gusty wind condition.NTSB LAX07LA099Accident · 1 fatalLimited investigationFinal reportMallian Rocket II · Arvin, CALoss of control during cruise for undetermined reasons.NTSB LAX07LA054Accident · 2 fatalLimited investigationFinal reportJohn Lauer Harmon Rocket II · Bakersfield, CAThe pilot's failure to maintain terrain clearance during an aerobatic maneuver.NTSB LAX06LA229Accident · No injuriesLimited investigationFinal reportVelocity 173/RG-XL · Modesto, CAthe pilot's misjudged flare and improper recovery from a bounced landing, which resulted in a hard landing and landing gear collapse. A contributing factor was the pilot/builder's inadequate adjustment of the landing gear cable tension.NTSB LAX06LA228Accident · No injuriesLimited investigationFinal reportPalmer Seawind 3000 · Havasu Lake, CAan electrical fire due to improper wiring of the electrical system by other maintenance personnel.NTSB LAX06CA212Accident · No injuriesData collectionFinal reportMaule M-7-235C · La Verne, CAthe pilot's failure to obtain/maintain directional control on the landing rollout.NTSB ANC06LA029Accident · 1 fatalLimited investigationFinal reportCooper Harmon Rocket ll · McKittrick, CAThe pilot's failure to maintain altitude/clearance while performing intentional low altitude aerobatic flight maneuvers. Factors associated with the accident are the low altitude aerobatic flight maneuvers.NTSB LAX06FA054Accident · 2 fatalField investigationFinal reportPiper PA-32RT-300 · Kingsburg, CAThe pilot's in-flight decision to continue VFR flight into instrument meteorological conditions during descent, which resulted in an in-flight collision with trees and terrain. Fog, low ceiling, and obscuration were factors.NTSB LAX06CA039Accident · No injuriesData collectionFinal reportCessna 182T · Livermore, CAsubstantial damage to the airplane during unknown phase of flight for undetermined reasons.NTSB LAX05CA147Accident · No injuriesData collectionFinal reportMaule MA-7-235C · Borrego Springs, CAthe pilot's failure to maintain directional control.NTSB LAX04LA253Accident · 1 fatalLimited investigationFinal reportAnderson Harmon Rocket II · Seal Beach, CAthe in-flight separation of the elevator, which resulted in a loss of airplane control and an uncontrolled descent. The underlying cause and mechanism of the elevator separation could not be determined.NTSB LAX04LA251Accident · No injuriesLimited investigationFinal reportSocata TB-20 · Perris, CAA loss of engine power due to oil exhaustion as a result of the mechanic's use of an incorrect gasket during the installation of the vacuum pump.NTSB LAX02LA275Accident · No injuriesLimited investigationFinal reportHuene Velocity XL-RG · Fresno, CAAn in-flight exhaust stack separation during descent for landing resulting in loss of engine power and a forced landing to an open field.NTSB LAX02LA112Accident · No injuriesLimited investigationFinal reportMaule M-7-260 · Montague, CAThe pilot's inadequate compensation for the crosswind condition and failure to maintain directional control.