NTSB investigations: Lycoming 0-540 series, 2025
25 cases on aircraft whose registry engine model is Lycoming 0-540 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 | 146 |
|---|---|
| 1965 | 151 |
| 1966 | 150 |
| 1967 | 192 |
| 1968 | 128 |
| 1969 | 110 |
| 1970 | 110 |
| 1971 | 118 |
| 1972 | 115 |
| 1973 | 83 |
| 1974 | 98 |
| 1975 | 83 |
| 1976 | 77 |
| 1977 | 97 |
| 1978 | 78 |
| 1979 | 92 |
| 1980 | 82 |
| 1981 | 80 |
| 1982 | 58 |
| 1983 | 59 |
| 1984 | 51 |
| 1985 | 59 |
| 1986 | 29 |
| 1987 | 47 |
| 1988 | 41 |
| 1989 | 35 |
| 1990 | 39 |
| 1991 | 31 |
| 1992 | 28 |
| 1993 | 26 |
| 1994 | 41 |
| 1995 | 41 |
| 1996 | 41 |
| 1997 | 26 |
| 1998 | 30 |
| 1999 | 35 |
| 2000 | 35 |
| 2001 | 40 |
| 2002 | 52 |
| 2003 | 39 |
| 2004 | 35 |
| 2005 | 39 |
| 2006 | 43 |
| 2007 | 30 |
| 2008 | 38 |
| 2009 | 37 |
| 2010 | 28 |
| 2011 | 37 |
| 2012 | 24 |
| 2013 | 15 |
| 2014 | 31 |
| 2015 | 24 |
| 2016 | 27 |
| 2017 | 25 |
| 2018 | 25 |
| 2019 | 32 |
| 2020 | 24 |
| 2021 | 28 |
| 2022 | 25 |
| 2023 | 30 |
| 2024 | 23 |
| 2025 | 25 |
| 2026 | 23 |
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 ('41532'))
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 ('41532'))
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 WPR26FA069Accident · 1 fatalClass 3 · FieldPreliminary reportPiper PA-32-260 · Rio Linda, CAOn December 24, 2025, at approximately 1230 Pacific standard time, a Piper PA-32-260, N2785Q, was substantially damaged when it was involved in an accident near Rio Linda, California. The pilot sustained serious injuries, and the pilot-rated passenger was…NTSB CEN26LA073Accident · Minor injuriesClass 4 · LimitedFinal reportRockwell International 114 · Stroud, OKThe pilot’s inadequate fuel planning, which resulted in a total loss of power due to fuel exhaustion.NTSB CEN26LA042Accident · Minor injuriesClass 3 · LimitedPreliminary reportPiper PA-28-235 · Castle Rock, COOn November 10, 2025, about 1815 mountain standard time, a Piper PA-28-235 airplane, N9143W, was substantially damaged when it was involved in an accident near Castle Rock, Colorado. The pilot and one passenger reported no injuries. A second passenger…NTSB CEN26LA038Accident · No injuriesClass 4 · LimitedFinal reportCessna R182 · Brainerd, MNThe pilot’s failure to extended to landing gear before landing.NTSB CEN26LA025Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-24-250 · Eau Claire, WIThe pilot’s failure to ensure that the landing gear was properly extended before landing. Contributing to the accident was the pilot’s unfamiliarity with the landing gear warning horn and failure to verify the gear was extended with the cockpit position…NTSB WPR25LA295Accident · No injuriesClass 3 · LimitedPreliminary reportSiai-Marchetti SF260B · Billings, MTOn September 26, 2025, about 1040 mountain daylight time, a SIAI-MARCHETTI SF 260B, N272C, was substantially damaged when it was involved in an accident near Billings, Montana. The pilot and passenger were not injured. The airplane was operated as a Title 14…NTSB ANC25LA105Accident · Serious injuriesClass 3 · LimitedPreliminary reportMaule M-5-235C · Point MacKenzie, AKOn September 13, 2025, about 12:28 Alaska daylight time, a Maule M5-235C airplane, N343GA, was substantially damaged when it was involved in an accident near Point McKenzie, Alaska. The commercial pilot sustained serious injuries. The airplane was operated…NTSB CEN25LA357Accident · Serious injuriesClass 3 · LimitedPreliminary reportPiper PA-24-250 · Gregory, MIOn August 28, 2025, at about 1550 eastern daylight time, a Piper PA-24-250 airplane, N7412P, was substantially damaged when it was involved in an accident near Gregory, Michigan. The pilot was seriously injured. The airplane was operated as a Title 14 Code of…NTSB CEN25LA336Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-25-235 · Argusville, NDThe pilot’s failure to maintain clearance from terrain while maneuvering at low altitude.NTSB WPR25LA266Accident · No injuriesClass 3 · LimitedPreliminary reportCessna TR182 · San Diego, CAOn August 12, 2025, about 1330 Pacific daylight time, Cessna TR182 airplane, N619MW, was substantially damaged when it was involved in an accident near San Diego, California. The pilot and passenger were not injured. The airplane was operated as a Title 14…NTSB CEN25FA308Accident · 1 fatalClass 3 · FieldPreliminary reportCessna T182T · Augusta, AROn August 7, 2025, at 1037 central daylight time, a Cessna T182T airplane, N35370, was substantially damaged when it was involved in an accident near Augusta, Arkansas. The pilot was fatally injured and the passenger received minor injuries. The airplane was…NTSB WPR25LA237Accident · No injuriesClass 4 · LimitedFinal reportCessna R182 · Thermal, CAThe pilot's failure to extend the landing gear during landing. Contributing to the accident was the pilot’s failure to use a pre-landing checklist.NTSB GAA25WA228Accident · No injuriesClass 3 · ForeignPiper PA32 · Marsh Harbor, BahamasNTSB CEN25LA290Accident · No injuriesClass 4 · LimitedFinal reportCessna R182 · Lansing, ILThe pilot's failure to extend the landing gear before landing due to his distraction of other traffic and failure to follow his landing procedures.NTSB WPR25LA217Accident · Minor injuriesClass 3 · LimitedPreliminary reportCessna TR182 · Tuba City, AZOn July 17, 2025, about 1447 mountain standard time, a Cessna TR182, N182KC, was substantially damaged when it was involved in an accident near Tuba City, Arizona. The pilot and passenger were not injured. The airplane was operated as a Title 14 Code of…NTSB ERA25LA235Accident · No injuriesClass 3 · LimitedFinal reportCessna R182 · Milton, FLSeparation of the throttle cable sleeve during takeoff, which resulted an uncommanded engine power reduction and the pilot’s inability to control the engine throttle, and resulted in a forced landing.NTSB WPR25LA186Accident · No injuriesClass 4 · LimitedFinal reportKohut Mark A Murphy SR 2500 · Challis, IDThe pilot’s failure to maintain directional control during the landing roll.NTSB WPR25LA131Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-32-260 · Green Valley, AZThe pilot's improper fuel management, which resulted in a total loss of engine power due to fuel starvation.NTSB CEN25FA124Accident · 1 fatalClass 3 · FieldPreliminary reportRobinson Helicopter R44 · Danville, VAOn March 15, 2025, about 1500 eastern daylight time, a Robinson R44 helicopter, N331ES, was destroyed when it was involved in an accident near Danville, Virginia. The pilot was fatally injured. The helicopter was operated as a Title 14 Code of Federal…NTSB ERA25LA130Accident · Serious injuriesClass 4 · LimitedFinal reportPiper PA-28-235 · Manchester, VTThe pilot’s improper decision to continue the visual flight rules flight into instrument meteorological conditions, which resulted in the accumulation of airframe icing and a subsequent aerodynamic stall/spin.NTSB WPR25LA092Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-235 · Shafter, CAA total loss of engine power due to carburetor ice. Contributing was the student pilot and flight instructors’ failure to utilize carburetor heat.NTSB CEN25LA085Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-28-235 · Mount Vernon, ILThe pilot's improper landing flare and subsequent improper recovery from a bounced landing, which resulted in a collision with terrain.NTSB CEN25LA081Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-24-250 · Bentonville, ARThe pilots’ mismanagement of the available fuel, which resulted in a loss of engine power due to fuel starvation.NTSB CEN25LA079Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-24-250 · Tyler, TXAn electrical system surge for a reason that could not be determined that resulted in an overvoltage event, internal damage to electronics equipment, smoke in the cockpit, and a gear up landing.NTSB WPR25FA079Accident · 1 fatalClass 3 · FieldPreliminary reportPiper PA-24-250 · Rock Springs, WYOn January 14, 2025, about 0622 mountain standard time, a Piper PA-24-250, N6502P, was destroyed when it was involved in an accident near Rock Springs, Wyoming. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations…