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NTSB investigations: Lycoming TI0-540 series, WI

31 cases on aircraft whose registry engine model is Lycoming TI0-540 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.

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Cases per year

19662026

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Latest cases

Query with SQL

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" = 'WI' 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 ('41533')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

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\" = 'WI' 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 ('41533'))
  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" = 'WI' 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 ('41533'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC

Run 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 CEN26LA263Accident · Serious injuriesClass 3 · LimitedPreliminary reportPiper PA24 · Baraboo, WIOn July 16, 2026, about 1508 central daylight time, a Piper PA-24-260 airplane, N8606P, sustained substantial damage when it was involved in an accident near Baraboo, Wisconsin. The pilot sustained serious injuries. The airplane was operated as a Title 14…Jul 16, 2026 · N8606P · Substantial damage NTSB CEN25LA220Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-24-260 · Ashland, WIThe pilot’s failure to extend the landing gear before landing and his failure to conduct the before landing checklist.Jun 24, 2025 · N8817P · Substantial damage NTSB GAA15CA287Accident · No injuriesData collectionFinal reportPiper PA 24 · West Bend, WIThe pilot's failure to maintain his descent rate during the landing, which resulted in a hard landing and runway excursion.Sep 26, 2015 · N8583P · Substantial damage NTSB CEN15LA333Accident · Serious injuriesLimited investigationFinal reportCessna 182 · Watertown, WIThe total loss of engine power due to carburetor icing.Aug 1, 2015 · N1685R · Substantial damage NTSB CEN13FA351Accident · 2 fatalField investigationFinal reportPiper PA-24-260 · La Pointe, WIThe pilot’s failure to maintain airplane control after deciding to go around after a gear-up landing, resulting in an aerodynamic stall.Jun 15, 2013 · N8815P · Destroyed NTSB CHI08FA054Accident · 1 fatalField investigationFinal reportPiper PA-32R-300 · Warrens, WIThe decision by the pilot to fly into known adverse weather, and the pilot's failure to maintain control of the airplane due to spatial disorientation. Contributing factors include the clouds and the night conditions.Dec 21, 2007 · N1919H · Destroyed NTSB CHI05CA275Accident · No injuriesData collectionFinal reportCessna T206H · Sturgeon Bay, WIThe unexpected wave that the airplane encountered during the landing flare.Sep 27, 2005 · N206WK · Substantial damage NTSB CHI02LA019Accident · No injuriesLimited investigationFinal reportPiper PA-32-301T · Phillips, WIThe fuel starvation encountered on takeoff and unsuitable terrain the pilot encountered during the forced landing. A factor was the fuel selector valve malfunction.Nov 4, 2001 · N82813 · Substantial damage NTSB CHI01LA174Accident · No injuriesLimited investigationFinal reportSmith Aerostar 600 · Wonewoc, WIThe deer on the runway as the airplane was landing.Jun 14, 2001 · N7484S · Substantial damage NTSB CHI99LA316Accident · No injuriesLimited investigationFinal reportPiper PA-23-250 · Osceola, WIthe pilot's improper preflight decision to attempt a takeoff with one engine inoperative.Aug 28, 1999 · N6592Y · Substantial damage NTSB CHI96LA335Accident · No injuriesLimited investigationFinal reportPiper PA-31 · Janesville, WIfuel exhaustion as a result of an inadequate preflight by the pilot in command.Sep 13, 1996 · N27299 · Substantial damage NTSB CHI96FA113Accident · 1 fatalField investigationFinal reportPiper PA-32 · Milwaukee, WIInadequate maintenance and inspection in that the Airworthiness Directive which applied to the fuel pump had not been complied with. A factor was the pilot was unable to reach land.Jan 17, 1996 · N3326Q · Destroyed NTSB CHI91LA299Accident · No injuriesLimited investigationFinal reportPiper PA-23-250 · Boscobel, WIImproper remedial action by the pilot-in-command (PIC), and inadequate monitoring by the designated pilot examiner (DPE) during a simulated emergency procedure. Factors related to the accident were: the loss of power in one engine due to an undetermined…Sep 20, 1991 · N915PM · Substantial damage NTSB CHI85LA286Accident · No injuriesLimited investigationFinal reportPiper PA-32R-300 · Appleton, WIAs the plt applied brakes during a full stop landing, the right brake failed. The plt then maneuvered the acft off the paved landing surface in an attempt to get it to roll to a stop. The right landing gear strut collapsed. The acft then slid into a fence and…Jul 14, 1985 · N4137F · Substantial damage NTSB CHI85LA216Accident · No injuriesLimited investigationFinal reportPiper PA-32T-300 · Milwaukee, WIThe pilot stated that the approach was normal and flown at 90 KIAS. He flared high and the acft landed hard on the right main landing gear, due to the excessive rate of decent. The damage was limited to the right wing spar and ribs.May 19, 1985 · N39628 · Substantial damage NTSB CHI84LA154Accident · No injuriesLimited investigationFinal reportPiper PA-24-260 · Kenosha, WIThe plt stated he mistook the ATIS reported winds of 020 deg at 21 KTS as 210 deg at 20 KTS. After executing the VOR rwy 14 apch, he continued to land on rwy 14. There was standing water on the rwy. While landing with a tail wind, the acft hydroplaned & ran…Apr 15, 1984 · N8667P · Substantial damage NTSB CHI82FA157Accident · Minor injuriesField investigationFinal reportPiper PA-32-300 · Milwaukee, WIEngine failure forced pilot to land in an open plowed field. Aircraft collided with wires but a successful landing was made. Oil pump gear tooth had failed.May 9, 1982 · N6837J · Substantial damage NTSB CHI81DER40Accident · Minor injuriesClosedPiper PA-32 · Crivitz, WISep 14, 1981 · N39628 · Substantial damage NTSB CHI81FA024Accident · 1 fatalClosedPiper PA-32 · Lyons Twp, WIFeb 2, 1981 · N300AC · Destroyed NTSB CHI79FEP27Accident · No injuriesClosedPiper PA-32 · Dodgeville, WIMay 17, 1979 · N6256J · Substantial damage NTSB CHI78FEP41Accident · No injuriesClosedPiper PA-32 · Lakewood, WIJul 8, 1978 · N5524F · Substantial damage NTSB CHI77FEP39Accident · No injuriesClosedPiper PA-32 · Madison, WIJun 17, 1977 · N15635 · Substantial damage NTSB CHI77DEP36Accident · Minor injuriesClosedPiper PA-32 · Clam Lake, WIJun 2, 1977 · N8383C · Substantial damage NTSB CHI77FA046Accident · 4 fatalClosedPiper PA-24 · Evansville, WIMay 27, 1977 · N9326P · Destroyed NTSB CHI77FEP10Accident · Serious injuriesClosedBeech C55 · Eau Claire, WIDec 9, 1976 · N551U · Substantial damage NTSB CHI77FEP07Accident · No injuriesClosedPiper PA-32R · Ashippun, WINov 27, 1976 · N6273J · Substantial damage NTSB CHI76DEP44Accident · No injuriesClosedPiper PA-24 · La Crosse, WIAug 18, 1976 · N9390P · Substantial damage NTSB NYC75DEP45Accident · No injuriesClosedPiper PA-32 · Lake Geneva, WIMar 1, 1975 · N8502N · Substantial damage NTSB CHI71FDJ45Accident · No injuriesClosedPiper PA-23 · Watertown, WIMar 4, 1971 · N5554Y · Substantial damage NTSB CHI70D0153Accident · No injuriesClosedPiper PA-23 · Iola, WIJul 31, 1969 · N6708Y · Destroyed NTSB CHI67D0349Accident · No injuriesClosedPiper PA-24 · Delavan, WIOct 31, 1966 · N8952P · Substantial damage