NTSB investigations: Lycoming VO-435 series, 1998
5 cases on aircraft whose registry engine model is Lycoming VO-435 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 | 17 |
|---|---|
| 1965 | 18 |
| 1966 | 15 |
| 1967 | 21 |
| 1968 | 12 |
| 1969 | 16 |
| 1970 | 28 |
| 1971 | 15 |
| 1972 | 20 |
| 1973 | 25 |
| 1974 | 28 |
| 1975 | 24 |
| 1976 | 18 |
| 1977 | 14 |
| 1978 | 27 |
| 1979 | 20 |
| 1980 | 18 |
| 1981 | 16 |
| 1982 | 15 |
| 1983 | 14 |
| 1984 | 14 |
| 1985 | 16 |
| 1986 | 13 |
| 1987 | 10 |
| 1988 | 12 |
| 1989 | 11 |
| 1990 | 6 |
| 1991 | 13 |
| 1992 | 10 |
| 1993 | 8 |
| 1994 | 11 |
| 1995 | 9 |
| 1996 | 7 |
| 1997 | 4 |
| 1998 | 5 |
| 1999 | 5 |
| 2000 | 6 |
| 2001 | 5 |
| 2002 | 8 |
| 2003 | 8 |
| 2004 | 4 |
| 2005 | 4 |
| 2006 | 4 |
| 2007 | 4 |
| 2009 | 3 |
| 2010 | 2 |
| 2011 | 5 |
| 2012 | 3 |
| 2013 | 6 |
| 2014 | 6 |
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 6 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 1 |
| 2026 | 2 |
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\") = 1998
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41525'))
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") = 1998
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41525'))
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 IAD99LA024Accident · Serious injuriesLimited investigationFinal reportBell 47-G5 · Essex Junction, VTthe pilot's improper entry into the autorotation, which resulted in the loss of power and a low rotor rpm condition. Also causal was the pilot's improper execution of the autorotation which resulted in the hard landing. Factors in the accident were the…NTSB LAX98LA309Accident · No injuriesLimited investigationFinal reportTexas Helicopter OH-13H · Gilroy, CAThe pilot's loss of control for undetermined reasons.NTSB CHI98LA292Accident · No injuriesLimited investigationFinal reportBell M74L · Grand Forks, NDThe worn rotor clutch shoes, and subsequent loss of main rotor rpm.NTSB LAX98LA225Accident · Minor injuriesLimited investigationFinal reportBell 47G-5 · Salinas, CAThe failure of the pilot to maintain clearance with the telephone lines.NTSB MIA98LA154Accident · Minor injuriesLimited investigationFinal reportBell 47G-2 · Fort Walton Bch, FLThe loss of engine power for undetermined reasons.