NTSB investigations: Lycoming TVO-435-GIA, WY

11 cases on aircraft whose registry engine model is Lycoming TVO-435-GIA. 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

19642026

NTSB investigations: Lycoming TVO-435-GIA, WY per year, 1964–2026: 11 cases
1964	1
1966	2
1967	2
1968	1
1969	3
1980	1
2005	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" = 'WY' 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 ('41526')) 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\" = 'WY' 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 ('41526'))
  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" = 'WY' 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 ('41526'))
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 DEN05LA137Accident · No injuriesLimited investigationFinal reportBell 47G-3B-1 · Rock Springs, WYthe pilot's failure to maintain control of the helicopter during the attempted autorotation after he experienced an engine overspeed that occurred for reasons undetermined.Sep 13, 2005 · N24SD · Substantial damage NTSB DEN80FTC05Accident · No injuriesClosedHiller Acft UH-12D · Mckennon, WYFeb 8, 1980 · N31331 · Substantial damage NTSB DEN70D0064Accident · No injuriesClosedBell 47G3B2 · Midwest, WYAug 18, 1969 · N1486W · Substantial damage NTSB DEN70D0040Accident · No injuriesClosedBell 47G-3B · Casper, WYJul 1, 1969 · N6225N · Substantial damage NTSB DEN69D0213Accident · Minor injuriesClosedBell 47G3B1 · Albany, WYMar 25, 1969 · N73285 · Substantial damage NTSB DEN69F0010Accident · No injuriesClosedBell 47G-3B · Baggs, WYJun 6, 1968 · N8532F · Substantial damage NTSB DEN67A0052Accident · Minor injuriesClosedBell 47G3B1 · Cody, WYMar 10, 1967 · N8537F · Destroyed NTSB DEN67A0048Accident · No injuriesClosedBell 47G3B1 · Riverton, WYFeb 21, 1967 · N8537F · Substantial damage NTSB DEN67A0021Accident · Serious injuriesClosedBell 47G3B1 · Old Faithful, WYSep 15, 1966 · N73982 · Substantial damage NTSB DEN67A0007Accident · Serious injuriesClosedBell 47G3B1 · Riverton, WYJul 20, 1966 · N1332X · Substantial damage NTSB UNK64X2453Accident · No injuriesClosedBell 47G3B1 · Bondurant, WYJun 23, 1964 · N73914 · Substantial damage