NTSB investigations: Lycoming IO-540 series
1,056 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
| 1964 | 1 |
|---|---|
| 1965 | 2 |
| 1966 | 1 |
| 1967 | 4 |
| 1968 | 1 |
| 1969 | 2 |
| 1970 | 3 |
| 1971 | 1 |
| 1972 | 3 |
| 1973 | 1 |
| 1974 | 1 |
| 1975 | 1 |
| 1976 | 4 |
| 1977 | 3 |
| 1978 | 6 |
| 1979 | 7 |
| 1980 | 18 |
| 1981 | 10 |
| 1982 | 16 |
| 1983 | 17 |
| 1984 | 30 |
| 1985 | 20 |
| 1986 | 17 |
| 1987 | 15 |
| 1988 | 12 |
| 1989 | 11 |
| 1990 | 14 |
| 1991 | 14 |
| 1992 | 19 |
| 1993 | 24 |
| 1994 | 13 |
| 1995 | 14 |
| 1996 | 16 |
| 1997 | 16 |
| 1998 | 16 |
| 1999 | 28 |
| 2000 | 27 |
| 2001 | 32 |
| 2002 | 37 |
| 2003 | 30 |
| 2004 | 35 |
| 2005 | 30 |
| 2006 | 31 |
| 2007 | 34 |
| 2008 | 29 |
| 2009 | 19 |
| 2010 | 29 |
| 2011 | 22 |
| 2012 | 26 |
| 2013 | 21 |
| 2014 | 28 |
| 2015 | 19 |
| 2016 | 18 |
| 2017 | 28 |
| 2018 | 27 |
| 2019 | 16 |
| 2020 | 15 |
| 2021 | 27 |
| 2022 | 23 |
| 2023 | 24 |
| 2024 | 14 |
| 2025 | 18 |
| 2026 | 16 |
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'))
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'))
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 WPR26LA306Accident · No injuriesClass 4 · LimitedInvestigation openAero Rampart Steen Skybolt · Roseburg, ORNTSB ERA26LA296Accident · Serious injuriesClass 3 · LimitedInvestigation openPiper PA32 · Dawsonville, GANTSB ERA26FA271Accident · 3 fatalClass 3 · FieldPreliminary reportSmith Aerostar 601 · Lake Clear, NYOn July 13, 2026, about 2236 eastern daylight time, a Smith Aerostar 601P, N800AA was destroyed when it was involved in an accident near Lake Clear, New York. The private pilot and two passengers were fatally injured. The airplane was operated as a Title 14…NTSB ERA26LA244Accident · No injuriesClass 3 · LimitedPreliminary reportCessna 182S · Naples, FLOn June 20, 2026 at 1030 eastern daylight time, a Cessna 182S, N7270H, was substantially damaged when it was involved in an accident near Naples, Florida. The pilot and three passengers were uninjured. The airplane was operated as a Title 14 Code of Federal…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 WPR26LA200Accident · No injuriesClass 4 · LimitedFinal reportMaule M-7-260C · Kanab, UTThe pilot’s failure to maintain directional control during the landing roll with gusting crosswind conditions.NTSB GAA26WA181Incident · No injuriesClass 5 · ForeignPiper PA-23-250 · Cumayasa, La Romana, Dominican RepublicNTSB ANC26LA029Accident · No injuriesClass 3 · LimitedPreliminary reportMaule M-7-235 · Wasilla, AKOn April 3, 2026, at 1300 Alaska daylight time, a Maule M 7 235 airplane, N93ML, was substantially damaged during an accident near Wasilla, Alaska. The pilot and one passenger were not injured. The airplane was operated as a personal flight under the…NTSB CEN26FA147Accident · 1 fatalClass 3 · FieldPreliminary reportExperimental Homebuilt Airshark · Statesboro, GAOn March 25, 2026, about 1453 eastern daylight time, an experimental homebuilt Airshark airplane, N220AS, was substantially damaged when it was involved in an accident near Statesboro, Georgia. The pilot was fatally injured. The airplane was operated as a…NTSB CEN26LA148Accident · Serious injuriesClass 3 · LimitedPreliminary reportRobinson Helicopter R44 II · Stonewall, TXOn March 24, 2026, about 0930 central daylight time, a Robinson R44 II helicopter, N233JD, was substantially damaged when it was involved in an accident near Stonewall, Texas. The pilot and passenger were seriously injured. The helicopter was operated as a…NTSB CEN26LA122Accident · No injuriesClass 4 · LimitedFinal reportCessna 182 · Golden, MOThe pilot’s failure to establish stabilized approach that would have allowed the airplane to touch down with adequate runway remaining. Contributing to the accident was the pilot’s failure to execute a go-around.NTSB WPR26FA097Accident · 1 fatalClass 3 · FieldPreliminary reportSocata TB21 · Prescott, AZOn February 4, 2026, about 1950 mountain standard time, a Socata TB21, N967WM, was destroyed when it was involved in an accident near Prescott, Arizona. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91…NTSB CEN26LA101Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Sullivan, MOThe pilot’s failure to maintain clearance from powerlines during low-level operations.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 WPR26LA084Accident · No injuriesClass 4 · LimitedFinal reportMaule M-7-235B · Cody, WYThe pilot's failure to maintain directional control during landing roll.NTSB ERA26LA086Accident · No injuriesClass 4 · LimitedFinal reportPipistrel D O O Panthera X152 · Atlanta, GAThe pilot’s failure to extend the landing gear before landing.NTSB WPR26LA020Accident · 3 fatalClass 3 · LimitedPreliminary reportPiper PA-23-250 · Condon, MTOn October 17, 2025, about 1615 mountain daylight time, a Piper PA-23-250, N2345R, was substantially damaged when it was involved in an accident near Condon, Montana. The pilot and two passengers were fatally injured. The airplane was operated as a Title 14…NTSB ERA26LA013Accident · No injuriesClass 4 · LimitedFinal reportCessna T182T · Venice, FLThe pilot’s failure to maintain directional control while taxiing in gusty, quartering tailwind conditions.NTSB CEN25LA398Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-60-601P · Del Norte, COThe loss of directional control during landing roll due to a flat tire.NTSB ERA25LA363Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-32R-300 · White Plains, NYThe pilot’s failure to maintain proper glidepath during a night visual approach, which resulted in a collision with the runway lighting system. Contributing to the outcome was the pilot’s momentary disorientation due to glare from the runway approach lighting…NTSB ERA25LA358Accident · No injuriesClass 4 · LimitedFinal reportCessna 182 · Blue Ridge, GAThe pilot’s failure to obtain the proper touchdown point, which resulted in a runway overrun.NTSB CEN25LA387Accident · Serious injuriesClass 4 · LimitedFinal reportPiper PA-32R-301 · Oxford, MSThe pilot’s exceedance of the airplane’s critical angle of attack during the initial takeoff climb, which resulted in an aerodynamic stall and impact with terrain.NTSB CEN25LA372Accident · No injuriesClass 4 · LimitedFinal reportCessna 182T · Seymour, INThe flight instructor’s improper landing flare which resulted in a bounced landing and loss of control.NTSB ERA25LA325Accident · No injuriesClass 4 · LimitedFinal reportCessna 182 · Lebanon, OHThe pilot’s failure to maintain directional control of the airplane during takeoff, which resulted in a runway excursion and collision with a sign.NTSB ANC25LA099Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Petersville, AKThe pilot’s exceedance of the helicopter’s available power while landing in a remote confined area, which resulted in rotor droop and a hard landing.NTSB ERA25LA298Accident · No injuriesClass 4 · LimitedFinal reportPaschal JR Roy E Velocity XL RG · Columbia, SCA landing gear collapse during landing.NTSB ERA25LA215Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA32-300 · Branford, CTMaintenance personnel's improper installation and inspection of the crankshaft gear bolt during major overhaul, which resulted in the crankshaft gear disengaging from the accessory gears which led to a total loss of engine power.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 WPR25LA136Accident · No injuriesClass 3 · LimitedPreliminary reportD'Apuzzo Senior Aero Sport · Phoenix, AZOn April 19, 2025, about 1106 Pacific daylight time, an experimental amateur built D'Apuzzo Senior Aero Sport, N321WC, was substantially damaged when it was involved in an accident near Phoenix, Arizona. The pilot was not injured. The airplane was operated as…NTSB WPR25LA118Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Hobbs, NMThe student pilot’s loss of directional control during a hover, which resulted in an impact with terrain.NTSB ERA25LA102Accident · No injuriesClass 4 · LimitedFinal reportDaniel A Robinson High 6 Berkut 540 · Orlando, FLThe pilot’s failure to verify the canopy latches were in the locked position prior to takeoff.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 ANC25LA015Accident · No injuriesClass 4 · LimitedFinal reportGippsaero PTY GA8 · Nightmute, AKThe pilot’s loss of directional control while taxiing in gusting wind conditions.NTSB CEN25LA059Accident · No injuriesClass 3 · LimitedFinal reportCessna 182T · Pearland, TXThe AA-5 pilot’s failure to maintain separation from the 182T during approach and landing, which resulted in a ground collision during the landing roll. Contributing to the accident was the failure of the AA-5’s electrical system, which prevented the AA-5…NTSB CEN25FA019Accident · 4 fatalClass 2 · FieldFinal reportRobinson R44 · Houston, TXThe pilot’s failure to maintain clearance from a lighted radio tower during a visual night flight. Contributing to the accident was the air traffic controller’s failure to issue a safety alert notifying the pilot of the flight’s unsafe proximity to the tower.NTSB CEN25LA018Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-32R-301 · Van, TXThe mechanic’s improper maintenance of the engine’s air induction scat duct, which collapsed during the flight and resulted in a loss of engine power.NTSB CEN24LA378Accident · No injuriesClass 3 · LimitedFinal reportPiper PA32 · Caro, MIA total loss of engine power due to maintenance personnel’s failure to properly tighten the fuel supply line B-nut at the fuel servo.NTSB CEN24LA376Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-32-300 · Pierz, MNThe pilot’s inadequate fuel management which resulted in the loss of engine power due to fuel starvation.NTSB GAA24WA285Accident · 2 fatalClass 4 · ForeignPiper PA-23-250 · Nassau, BahamasNTSB ANC24LA055Accident · No injuriesClass 4 · LimitedFinal reportGippsland GA-8 · Tuntutuliak, AKThe pilot's failure to maintain directional control during takeoff after an encounter with a gusting wind, which resulted in a wing strike.NTSB WPR24LA166Accident · No injuriesClass 4 · LimitedFinal reportThomas J Spencer RV-10 · Snohomish, WAThe pilot’s failure to attain a proper touchdown point during landing with a tailwind which resulted in a runway overrun.NTSB ERA24LA240Accident · Serious injuriesClass 4 · LimitedFinal reportAero Commander Callair A-9B · Zebulon, NCA total loss of engine power while maneuvering due to fuel starvation.NTSB WPR24LA146Accident · Minor injuriesClass 3 · LimitedFinal reportRobert Sterling 4P · Lake Havasu City, AZA loss of engine power during initial climb due to fuel vapor lock. Contributing to the accident was the incorrect installation of the ancillary fuel supply system components.NTSB ERA24FA176Accident · 1 fatalClass 3 · FieldFinal reportPiper PA-32R-301 · Knoxville, TNThe pilot’s decision to depart into an area of instrument meteorological and icing conditions, which resulted in loss of airplane control and a subsequent in-flight breakup.NTSB CEN24LA155Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-32-301 · Sullivan, MOA bearing failure that resulted in fatigue failure of the crankshaft and a subsequent total loss of engine power.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 ANC24LA013Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 II · Glacier View, AKA sudden stoppage of the tail rotor for unknown reasons, which resulted in the tortional overload failure of the tail rotor driveshaft.NTSB CEN24LA081Accident · No injuriesClass 4 · LimitedFinal reportMaule M-6-235 · Beaumont, TXThe pilot’s failure to maintain directional control during landing in crosswind conditions, which resulted in a ground loop on the runway.NTSB ERA24LA042Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Ogdensburg, NYThe loss of control of the helicopter during taxi, which resulted in rollover.