NTSB investigations: Lycoming 0-540 series, CA

9 cases on aircraft whose registry engine model is Lycoming 0-540 series, where the first occurrence was “Airframe/component/system failure/malfunction”. 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

19842026

NTSB investigations: Lycoming 0-540 series, CA per year, 1984–2026: 9 cases
1984	1
1986	1
1989	1
1993	1
1999	1
2004	1
2005	2
2006	1

Where

Open the map

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" = 'CA' 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 ('41532') AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 130)) 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\" = 'CA' 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 ('41532')
      AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 130))
  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" = 'CA' 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 ('41532')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 130))
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 ANC06LA041Accident · No injuriesLimited investigationFinal reportPiper PA-24-250 · Mammoth Lake, CAThe collapse of the right main landing gear during landing, which resulted in a loss of directional control and an on-ground encounter with a snowbank. A factor associated with the accident was other maintenance personnel's inadequate inspection of the…Mar 30, 2006 · N6744P · Substantial damage NTSB LAX05CA280Accident · No injuriesData collectionFinal reportPiper PA-28-236 · San Martin, CAthe pilot's failure to maintain directional control of the airplane during the landing roll. A factor in the accident was the spongy brakes.Aug 25, 2005 · N4366K · Substantial damage NTSB LAX05LA266Accident · No injuriesLimited investigationFinal reportAgusta SF 260D · Redding, CAthe company maintenance personnel's failure to follow a prescribed canopy installation procedures.Aug 11, 2005 · N402FD · Substantial damage NTSB LAX04LA287Accident · No injuriesLimited investigationFinal reportCessna TR182 · Torrance, CAA wheels up landing due to the failure of the hydraulic hose leading to the nose gear actuator, which depleted the hydraulic system of pressurized fluid.Aug 6, 2004 · N4657S · Substantial damage NTSB LAX00LA019Accident · No injuriesLimited investigationFinal reportCessna TR182 · Fresno, CAInadequate maintenance inspection mandated by the FAA, and the inadequate design of the exhaust heater core/muffler and deflectors that failed to divert hot exhaust gasses away from the battery and cabin heat valve.Oct 19, 1999 · N756LE · Substantial damage NTSB LAX93FA311Accident · 3 fatalField investigationFinal reportRobinson R44 · El Monte, CAFatigue failure of the cyclic control (stick) assembly, which resulted in loss of cyclic (pitch & roll) control.Jul 31, 1993 · N445RH · Destroyed NTSB LAX89FA277Accident · 2 fatalField investigationFinal reportPiper PA-23-250 · Lake Tahoe, CADisablement of the stabilator flight control system. A contributing factor was: inadequate maintenance.Aug 14, 1989 · N4838P · Destroyed NTSB LAX86LA110Accident · No injuriesLimited investigationFinal reportPiper PA-23-250 · San Francisco, CAOn feb 9, 1986 at 1717 PST a Piper PA-23, N5300Y, ditched approximately 460 NM sw of sfo, CA. The flt originated from hnl, HI. In flt fuel leak was discovered after 7 hrs of flight. Fuel vapors were seen contrailing off both wings. The plt attempted to…Feb 10, 1986 · N5300Y · Destroyed NTSB LAX84LA282Accident · No injuriesLimited investigationFinal reportPiper PA-24-250 · Visalia, CAWhen the plt arrived at his destination, he was unable to fully extend the gear. He diverted to Visalia, CA. After reducing the fuel load, he made an intentional, power-off, wheels-up landing. An exam revealed that nose gear bellcrank assy had caught on the…May 5, 1984 · N5597P · Substantial damage