NTSB investigations: Lycoming VO-435 series, IN

13 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

19712026
NTSB investigations: Lycoming VO-435 series, IN per year, 1971–2026: 13 cases
19711
19731
19761
19852
19882
19891
19911
20001
20041
20121
20181

Latest 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 c.\"eventStateOrRegion\" = 'IN' 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 ('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.

NTSB CEN18FA258Accident · 1 fatalField investigationFinal reportBell 47G · Arlington, INThe inflight separation of the upper transmission due to the thread failure of transmission housing attachment bolts, which were installed on the helicopter with thread damage from a prior installation.Jul 6, 2018 · N96195 · Substantial damageNTSB CEN12CA484Accident · Serious injuriesData collectionFinal reportBell 47G-2A · Austin, INThe pilot did not maintain clearance from terrain during a low-level aerial application flight and lost control of the helicopter.Jul 27, 2012 · N652HA · Substantial damageNTSB CHI04CA229Accident · No injuriesData collectionFinal reportBell 47G2 · Muncie, INThe engine failure for an undetermined reason, and the pilot's inability to properly level-off for landing due to the low rotor speed, which resulted in the hard landing. The low altitude where the engine failure occurred was a factor.Aug 14, 2004 · N96MB · DestroyedNTSB CHI00TA306Accident · Minor injuriesFinal reportBell 47G-5A · Economy, INThe pilot failed to maintain control of the helicopter while attempting a landing on unsuitable terrain. A factor associated with the accident was the grass covered, down slope in the terrain.Sep 22, 2000 · N14841 · Substantial damageNTSB CHI91LA245Accident · Serious injuriesLimited investigationFinal reportHiller 1345 · Michigan City, INFuel exhaustion due the pilot's delay in refueling. Factors related to the accident were pressure induced by others (passenger), and the absence of suitable terrain.Aug 3, 1991 · N57972 · Substantial damageNTSB CHI89DEX05Accident · No injuriesFinal reportTexas Helicopter OH-13H/M74A · New Richmond, INThe pilot's misjudgement of the fuel supply which resulted in fuel exhaustion.Jul 13, 1989 · N10002 · Substantial damageNTSB 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.Aug 10, 1988 · N25561 · DestroyedNTSB 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…Jul 11, 1988 · N9093T · Substantial damageNTSB CHI85FA301Accident · 1 fatalField investigationFinal reportBell 47G2A1 · Brook, INThe helicopter contacted the terrain in a flat attitude and rolled over during an autorotative landing. A witness stated an autorotation was entered at 800 ft AGL during which the plt made a 360 deg descending turn. An application of pwr was heard at an alt…Jul 20, 1985 · N1345A · DestroyedNTSB CHI85FEX04Accident · Serious injuriesFinal reportTexas Helicopter OH13E/M74 · Veedersburg, INThe acft was destroyed during a hard forced landing in a soybean fld following a loss of pwr. Inspection of the helicopter revealed the carburetor, fuel filter and fuel tank were void of fuel. The plt received received serious injuries during the accident and…Jul 17, 1985 · N10000 · DestroyedNTSB CHI76FEA35Accident · Minor injuriesClosedBell 47G-2 · Monticello, INMay 22, 1976 · N9238Z · Substantial damageNTSB CHI74DEA13Accident · No injuriesClosedBell 47G-2A · Veedersburg, INSep 16, 1973 · N7579 · Substantial damageNTSB CHI72FET06Accident · Minor injuriesClosedBell 47G-2 · Laporte, INAug 18, 1971 · N2495B · Destroyed