NTSB investigations: Lycoming VO-435 series, 1993
8 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\") = 1993
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") = 1993
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 ATL94LA009Accident · No injuriesLimited investigationFinal reportBell 47G2 · Billingsley, ALThe pilot's improper vertical liftoff which resulted in dynamic roll-over and the main rotor's impact with the ground.NTSB CHI93DEP05Accident · Minor injuriesFinal reportBell 47-G5 · Fulton, WIthe failure (fracture) of the number one cylinder intake valve retainer (keeper).NTSB CHI93LA320Accident · Minor injuriesLimited investigationFinal reportBell 47-G5 · Schaumburg, ILthe pilot's improper autorotation techniques.NTSB DEN93LA091Accident · No injuriesLimited investigationFinal reportContinental Copters Tomcat MK5A · Duson, LAFailure of the transmission mast bearing, resulting in oil contamination and subsequent blockage of the internal oil ports and passages. Factors were: total loss of collective control and partial loss of cyclic control.NTSB FTW93LA178Accident · No injuriesLimited investigationFinal reportBell-Transworld 47G-2 · Wynne, ARPartial power loss due to the failure of one magneto. A factor was the lack of suitable terrain for the forced landing.NTSB CHI93LA179Accident · Minor injuriesLimited investigationFinal reportBell 47 · Berlin, WIThe pilot-in-command's failure to see the obstruction.NTSB LAX93LA157Accident · Minor injuriesLimited investigationFinal reportBell 47G5 · Greenfield, CAThe pilot's failure to maintain an adequate clearance from the power lines while performing an aerial application run.NTSB MIA93LA076Accident · Minor injuriesLimited investigationFinal reportHuddleston-Bell 47G2 · Rio Grande, PRPoor in-flight planning by the pilot-in-command. Contributing to the accident was the flight's lack of total experience.