NTSB investigations: Lycoming IO-540 series, 2025
18 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 year(c.\"eventDate\") = 2025
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 year(c."eventDate") = 2025
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 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.