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NTSB investigations: Lycoming IO-540 series, IN

17 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.

Defining event

Finding

Phase of flight

Aircraft model

Cases per year

19892026

Where

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" = 'IN' 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

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\" = 'IN' 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" = 'IN' 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

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 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.Sep 9, 2025 · N357CP · Substantial damage NTSB CEN23LA022Accident · Serious injuriesClass 3 · LimitedFinal reportPiper PA-32R-300 · Evansville, INThe total loss of engine power for reasons that could not be determined based on the available evidence.Oct 30, 2022 · N349SB · Substantial damage NTSB CEN20LA401Accident · 3 fatalClass 3 · LimitedFinal reportPiper PA32 · Kokomo, INThe pilot’s inadequate visual lookout, which resulted in a collision with a utility pole and the subsequent collision with terrain.Sep 20, 2020 · N8213X · Destroyed NTSB CEN20FA002Accident · 1 fatalClass 3 · FieldFinal reportPiper Aerostar 602P · Kokomo, INThe pilot's exceedance of the airplane’s critical angle of attack following a dual engine power loss caused by the line service technician fueling the airplane with the wrong fuel, which resulted in an aerodynamic stall and subsequent loss of control.…Oct 5, 2019 · N326CW · Destroyed NTSB CEN17LA271Accident · No injuriesLimited investigationFinal reportPiper PA 32-300 · Rushville, INThe pilot’s inability to properly control engine power because of an improperly installed throttle control arm, which resulted in a partial loss of engine power and led to a forced landing.Jul 5, 2017 · N112DE · Substantial damage NTSB GAA17CA279Accident · No injuriesData collectionFinal reportRobinson Helicopter R44 · Vevay, INThe pilot’s failure to see and avoid power lines during an agricultural application flight due to distraction when reading a map.May 10, 2017 · N428JG · Substantial damage NTSB CEN14CA422Accident · No injuriesData collectionFinal reportPiper PA 32-300 · Warsaw, INThe pilot failed to maintain directional control during landing.Jul 31, 2014 · N8160A · Substantial damage NTSB CHI06CA181Accident · No injuriesData collectionFinal reportPiper PA-31-350 · Indianapolis, INThe failure of the tug driver to maintain clearance from the airplane taxiing on an active taxiway. A factor was the night conditions.Jul 11, 2006 · N40978 · Substantial damage NTSB CHI04LA052Accident · No injuriesLimited investigationFinal reportPiper PA-32RT-300 · Fishers, INThe pilot not maintaining altitude/clearance from the trees during the circling approach, his continued descent below minimum descent altitude, and the pilot not performing a missed approach. A factor was the trees the pilot impacted during the circling…Jan 2, 2004 · N21992 · Substantial damage NTSB CHI02FA294Accident · 2 fatalField investigationFinal reportAviat S-2C · Sheridan, INThe pilot's failure to maintain adequate altitude and airspeed while performing an aerobatic maneuver. Contributing factors were the pilot-in-command exceeding the aircraft weight and balance, and his inadequate preflight planning/preparation.Sep 25, 2002 · N116PS · Destroyed NTSB CHI02FA197Accident · 1 fatalField investigationFinal reportPiper PA-60 · Columbus, INThe pilot's failure to maintain control of the airplane during a missed approach. Additional factors included the operator's inadequate oversight, the pilot's improper in-flight decision, conditions conducive to pilot fatigue, fog, and night.Jul 18, 2002 · N158GA · Destroyed NTSB CHI01LA261Accident · No injuriesLimited investigationFinal reportMcIntosh Steen Skybolt · Lebanon, INThe pilot misjudged his altitude during the landing. A factor was the soybean crop which the airplane contacted.Jul 26, 2001 · N2261N · Substantial damage NTSB CHI99LA059Accident · No injuriesLimited investigationFinal reportRockwell 500-S · Plymouth, INthe pilot's failure to maintain directional control of the airplane while landing. Factors associated with the accident were the tailwind condition and the pilot landing in the wrong direction.Jan 6, 1999 · N50BA · Substantial damage NTSB CHI96LA272Accident · No injuriesLimited investigationFinal reportMaule MT-7-235 · Poseyville, INthe pilot's improper flare during the landing. A factor relating to the accident was: the pilot's lack of familiarity with the make and model of airplane.Aug 4, 1996 · N3187Z · Substantial damage NTSB CHI96LA086Accident · No injuriesLimited investigationFinal reportPiper PA-32-301 · Marion, INthe pilot's failure to maintain directional control during landing.Jan 31, 1996 · N800TC · Substantial damage NTSB CHI92FA267Accident · 1 fatalField investigationFinal reportPiper PA-61-601P · Aurora, INExceeding the design stress limits of the airplane by the pilot in command.Sep 8, 1992 · N717BB · Destroyed NTSB CHI89LA110Accident · No injuriesLimited investigationFinal reportMaule MX-7-235 · Indianapolis, INImproper compensation for wind conditions by the pilot, his failure to maintain runway alignment, and his misjudgement of wingtip clearance above the ground as he was maneuvering to avoid the runway & VASI lights. The crosswind and runway/vasi lights were…Jun 17, 1989 · N12VR · Substantial damage