NTSB investigations: Lycoming VO-435 series, 1988
12 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\") = 1988
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") = 1988
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 LAX88DUG07Accident · No injuriesFinal reportBell 47G-5A · Perris, CAOn liftoff, tail rotor control was lost and helicopter spun with main rotor striking terrain. Investigation revealed fatigue failure of engine mounting cage. The eng basket had failed and allowed the t/r drive shaft to pull out of the coupling. The basket had…NTSB LAX88DUQ04Accident · No injuriesFinal reportTexas Helicopter M74A · Lancaster, CADuring an aerial application flight, just after takeoff, the nose of the helicopter suddenly pitched up. The pilot reduced power to keep from climbing. The fore/aft cyclic control had no effect. The helicopter settled to the ground resulting in substantial…NTSB NYC88LA214Accident · Minor injuriesLimited investigationFinal reportBell 47G5 · Biddeford, METhe helicopter made an approach to a low hover above a hard surfaced rwy. The helicopter was slowly air taxiing when the plt felt the helicopter become unstable directionally and he considered making a run-on landing. However, before he could make the landing…NTSB MIA88LA250Accident · Minor injuriesLimited investigationFinal reportContinental Copters MK-5A · Valley Park, MSThe pilot stated that he thought he had 8 gallons of fuel prior to takeoff. The engine failed about 100 ft AGL and he attempted to stretch the glide of the helicopter by using collective pitch. The aircraft hit hard and rolled over. Only 1 quart of fuel was…NTSB CHI88DEX11Accident · 1 fatalFinal reportContinental Copters MK-5 · Redkey, INPhysical impairment of the pilot due to drugs which resulted in a misjudged approach and subsequent contact with trees during the approach to an aerial application swath run.NTSB CHI88DET05Accident · No injuriesFinal reportBell 47J · Dowagiac, MIFailure to maintian adequate rotor RPM by the unqualified pilot.NTSB CHI88DEX08Accident · No injuriesFinal reportContinental Copters Tomcat MK-6 · Straughn, INAerial application helicopter struck power lines in field on first swath run. This was the first time the pilot had sprayed this field. Prior to spraying the field he questioned the farmer regarding power lines or other obstructions. The farmer replied that…NTSB MIA88LA186Accident · No injuriesLimited investigationFinal reportContinental Copters MK6B · Callahan, FLWhile maneuvering the helicopter during an aerial application flt the eng quit. During the autorotative landing the helicopter landed hard. Examination of the eng revealed the accessory drive gear, which is attached to the crankshaft by 6 AN-4A bolts with the…NTSB CHI88DEM05Accident · No injuriesFinal reportBell 47G-2A · Midland, MIThe plt rprtd that before takeoff, he checked the fuel gage & concluded there was enough fuel to dispense his load. However, after spraying out the load, he started to return to the landing site & then the eng lost power from fuel exhaustion. The helicopter…NTSB MKC88LA092Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Mc Dougal, ARThe pilot stated that he had just begun the spraying of a rice field when one of the spray nozzles malfunctioned. As he was attempting to set the helicopter down on the ground, to work on the nozzle, the main rotor blades struck a tree. The main rotor blades…NTSB LAX88LA126Accident · Minor injuriesLimited investigationFinal reportBell 47G-2A-1 · Oceanside, CAThe non-U.S. Certificated pilot lost control of the helicopter while hovering 3-FT AGL during a maintenance test flight. The acft descended, touched down hard and rolled over. The non-english speaking pilot immediately departed the scene & reportedly headed…NTSB FTW88DRA03Accident · Serious injuriesFinal reportHiller UH-12-D · Bon-Wier, TXGround crewmember's failure to follow established procedures for secureing the aircraft to the transport trailer.