NTSB investigations: Lycoming VO-540 series, 1995
7 cases on aircraft whose registry engine model is Lycoming VO-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.
Cases per year
| 1964 | 4 |
|---|---|
| 1965 | 15 |
| 1966 | 16 |
| 1967 | 5 |
| 1968 | 15 |
| 1969 | 10 |
| 1970 | 8 |
| 1971 | 7 |
| 1972 | 6 |
| 1973 | 9 |
| 1974 | 11 |
| 1975 | 14 |
| 1976 | 13 |
| 1977 | 13 |
| 1978 | 22 |
| 1979 | 17 |
| 1980 | 8 |
| 1981 | 14 |
| 1982 | 9 |
| 1983 | 10 |
| 1984 | 9 |
| 1985 | 3 |
| 1986 | 9 |
| 1987 | 8 |
| 1988 | 6 |
| 1989 | 5 |
| 1990 | 6 |
| 1991 | 8 |
| 1992 | 6 |
| 1993 | 7 |
| 1994 | 4 |
| 1995 | 7 |
| 1996 | 7 |
| 1997 | 5 |
| 1998 | 6 |
| 1999 | 2 |
| 2000 | 3 |
| 2001 | 4 |
| 2002 | 6 |
| 2003 | 4 |
| 2004 | 3 |
| 2005 | 4 |
| 2008 | 6 |
| 2009 | 2 |
| 2010 | 6 |
| 2011 | 3 |
| 2012 | 1 |
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 3 |
| 2017 | 1 |
| 2022 | 2 |
| 2025 | 1 |
| 2026 | 1 |
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\") = 1995
AND c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41534', '41582'))
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") = 1995
AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41534', '41582'))
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 FTW96LA005Accident · Minor injuriesLimited investigationFinal reportBell 47G-4A · Edinburg, TXthe pilot's improper takeoff planning which resulted in the loss of conrol. A factor was the gusty crosswind condition.NTSB CHI95LA270Accident · Minor injuriesLimited investigationFinal reportBell 47 · Arlington Hts, ILplot misjudged the flare. The factors included the pilot getting too close to the lead helicopter, allowing his airspeed to get too slow, and encountering settling with power.NTSB FTW95LA230Accident · Minor injuriesLimited investigationFinal reportHiller UH-12E · Checotah, OKThe pilot allowing the helicopter to touchdown improperly. A factor was the erratic running engine.NTSB LAX95LA132Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Five Points, CAfuel exhaustion due to the pilot's inattention to the fuel supply.NTSB LAX95LA109Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Arvin, CAThe seizure of the transmission due to lack of lubrication from a plugged oil supply line.NTSB LAX95LA096Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Chowchilla, CAthe in-flight failure and separation of the main rotor hub due to a fatigue crack.NTSB FTW95LA105Accident · Minor injuriesLimited investigationFinal reportBell 47G-4A · El Indio, TXThe loss of tail rotor effectiveness. A factor was the gusty right quartering tailwind.