NTSB investigations: Lycoming VO-435 series, CA
130 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 | 7 |
|---|---|
| 1965 | 2 |
| 1966 | 2 |
| 1967 | 8 |
| 1968 | 2 |
| 1969 | 1 |
| 1970 | 3 |
| 1971 | 5 |
| 1972 | 5 |
| 1973 | 5 |
| 1974 | 4 |
| 1975 | 4 |
| 1976 | 3 |
| 1977 | 3 |
| 1978 | 7 |
| 1979 | 3 |
| 1980 | 5 |
| 1981 | 3 |
| 1982 | 3 |
| 1983 | 3 |
| 1984 | 5 |
| 1985 | 2 |
| 1986 | 2 |
| 1987 | 1 |
| 1988 | 3 |
| 1989 | 3 |
| 1991 | 1 |
| 1993 | 1 |
| 1994 | 1 |
| 1995 | 2 |
| 1996 | 3 |
| 1997 | 1 |
| 1998 | 2 |
| 1999 | 1 |
| 2000 | 3 |
| 2002 | 2 |
| 2003 | 2 |
| 2004 | 1 |
| 2006 | 1 |
| 2009 | 1 |
| 2010 | 1 |
| 2011 | 1 |
| 2013 | 3 |
| 2014 | 2 |
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 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 c.\"eventStateOrRegion\" = 'CA' 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.
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" = 'CA' 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" 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 WPR26LA207Accident · No injuriesClass 4 · LimitedFinal reportBell 47G-2 · Mettler, CAThe pilot's failure to ensure the loading hose had been disconnected before takeoff, which resulted in an interrupted takeoff and subsequent loss of control. Contributing to the accident was the ground loader's failure to disconnect the hose before…NTSB GAA20CA034Accident · Minor injuriesData collectionFinal reportBell 47G · King City, CAThe pilot's failure to maintain a proper descent rate, which resulted in a hard landing and the main rotor blades striking the tailboom.NTSB WPR18CA096Accident · Serious injuriesData collectionFinal reportBell 47G · Pixley, CAA total loss of engine power due to fuel starvation, which resulted from the pilot’s failure to ensure that adequate fuel was on board for the flight. Contributing to the accident was the pilot’s self-induced pressure to complete the flight due to impending…NTSB WPR17LA206Accident · Minor injuriesClass 3 · LimitedFinal reportBell 47G 5 · Salinas, CAThe pilot’s inadequate visual lookout, which resulted in an in-flight collision with a wire.NTSB WPR16LA099Accident · Minor injuriesClass 3 · LimitedFinal reportBell 47G 5 · San Ardo, CAThe failure of the pin in the outboard end of the lateral flight control torque tube.NTSB WPR15LA193Accident · 1 fatalLimited investigationFinal reportBell 47G 5 · Salinas, CAThe non-instrument-rated pilot's visual flight rules flight into instrument meteorological conditions, which resulted in his spatial disorientation and loss of helicopter control. Contributing to the accident was the pilot's impairment by high-dose opioid use.NTSB WPR15LA116Accident · Serious injuriesLimited investigationFinal reportBell 47G 2A · Ivanhoe, CAThe pilot’s failure to maintain clearance from a power line while maneuvering at low altitude.NTSB WPR14CA296Accident · Serious injuriesData collectionFinal reportBell 47G 2A · Merced, CAThe pilot's failure to adequately monitor the environment to maintain clearance from the power pole guide wire during low level maneuvering.NTSB WPR14CA196Accident · No injuriesData collectionFinal reportBell 47G · Bakersfield, CAThe pilot's failure to maintain aircraft control after the helicopter's skid catching on the side of a trailer during takeoff, which resulted in a dynamic rollover.NTSB WPR13LA429Accident · Minor injuriesLimited investigationFinal reportTexas Helicopter OH-13E/M74 · Santa Maria, CAThe pilot's inadequate monitoring of the environment and failure to maintain clearance from transmission wires during a low-altitude maneuver.NTSB WPR13LA404Accident · No injuriesLimited investigationFinal reportBell 47G5 · King City, CAThe failure of the helicopter’s center frame tube due to a fatigue crack and corrosion originating from a welded surface. Contributing to the accident was maintenance personnel’s inadequate inspection of the helicopter during its most recent 100-hour…NTSB WPR13CA084Accident · Minor injuriesData collectionFinal reportBell 47G · Five Points, CAThe pilot’s failure to maintain clearance with a telephone pole during a low-level maneuver.NTSB WPR11CA339Accident · No injuriesData collectionFinal reportBell 47G-5 · Watsonville, CAThe pilot's failure to maintain clearance from a pole while maneuvering during an aerial application flight.NTSB WPR10LA446Accident · Serious injuriesLimited investigationFinal reportBell 47G · Salinas, CAThe pilot's visual flight rules flight into instrument meteorological conditions, which resulted in his spatial disorientation and loss of helicopter control.NTSB WPR09CA333Accident · No injuriesData collectionFinal reportBell 47G-2 · Turlock, CAThe pilot's failure to maintain rotor RPM while maneuvering at a low altitude.NTSB LAX06CA180Accident · No injuriesData collectionFinal reportBell 47-G5 · Soledad, CAfuel exhaustion due to the pilot's inaccurate fuel consumption calculations and failure to refuel the helicopter which resulted in a loss of engine power.NTSB LAX04LA158Accident · No injuriesLimited investigationFinal reportQuinn E L Tom Cat MK-5A · Galt, CAa loss of engine power due to water contamination of the fuel system.NTSB LAX03CA285Accident · No injuriesData collectionFinal reportBell 47G-5 · Greenfield, CAthe pilot's failure to maintain clearance with the wires due to an inadequate visual lookout.NTSB LAX03LA236Accident · No injuriesLimited investigationFinal reportBell 47G-2A · Porterville, CAFatigue-induced failure of bolts in the helicopter's rotor drive flange, which resulted in a total loss of torque to the rotor drive shaft.NTSB LAX02LA262Accident · Serious injuriesLimited investigationFinal reportBell 47G-2 · Oasis, CAthe pilot's failure to maintain an adequate visual lookout and clearance with power lines while maneuvering during an aerial application flight.NTSB LAX02LA218Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Compton, CAthe failure and separation of a fan belt for the engine cooling system. A factor in the accident was the inadequate annual inspection 14 hours prior to the accident.NTSB LAX00LA280Accident · No injuriesLimited investigationFinal reportBell 47G-5 · King City, CAThe pilot's intentional flight into adverse weather which resulted in loss of visual reference and flight into power transmission wires and terrain.NTSB LAX00LA124Accident · Minor injuriesLimited investigationFinal reportBell 47G · Vacaville, CAFailure of the pilot to see wires and maintain clearance while flying at a low altitude.NTSB LAX00LA100Accident · No injuriesLimited investigationFinal reportBell 47G5 · Riverbank, CAthe pilot's failure to verify that ground personnel had disconnected the loading hose from the hopper before takeoff, resulting in restricted directional control and a hard landing.NTSB LAX99LA081Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Lemoore, CAThe inadequate nature of the operator's maintenance, which failed to detect the primer and magneto discrepancies. An overly lean fuel mixture and/or magneto cross firing resulted in detonation, an ensuing connecting rod failure, and a total loss of engine…NTSB LAX98LA309Accident · No injuriesLimited investigationFinal reportTexas Helicopter OH-13H · Gilroy, CAThe pilot's loss of control for undetermined reasons.NTSB LAX98LA225Accident · Minor injuriesLimited investigationFinal reportBell 47G-5 · Salinas, CAThe failure of the pilot to maintain clearance with the telephone lines.NTSB LAX98LA001Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Burbank, CAA loss of engine power for undetermined reasons.NTSB LAX97LA006Accident · No injuriesLimited investigationFinal reportBell 47G-5A · King City, CAthe pilot's failure to maintain adequate rotor rpm during the takeoff initial climb.NTSB LAX96LA326Accident · No injuriesLimited investigationFinal reportBell 47-G5 · Riverside, CAThe pilot's inaccurate perception of altitude which resulted in an improper flare and subsequent hard landing, and non use of the landing light.NTSB LAX96LA287Accident · No injuriesLimited investigationFinal reportBell 47-G5 · Lost Hills, CAimproper installation of the carburetor air box.NTSB LAX95LA216Accident · No injuriesLimited investigationFinal reportBell 47-G5 · Coalinga, CAclutch slippage for undetermined reasons. A factor in the accident was the helicopter's low above ground altitude, which limited the pilot's time and ability to recover main rotor rpm.NTSB LAX95LA213Accident · No injuriesLimited investigationFinal reportBell 47-G2A · Bakersfield, CAthe pilot's failure to maintain adequate lateral clearance from the irrigation standpipe while applying chemicals to a field.NTSB LAX94LA199Accident · 1 fatalLimited investigationFinal reportContinental Copters Tomcat MK5A · Brawley, CAFailure of the pilot to maintain sufficient altitude, while maneuvering to land after completing aerial application. Factors related to the accident were: darkness and the lack of visual cues for the pilot to detect the obstruction (power line).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 LAX91LA128Accident · No injuriesLimited investigationFinal reportBell 47G-5A · Farmington, CAThe contamination of the engine induction air filter. Soft terrain during the touchdown was a factor in the accident.NTSB LAX90LA042Accident · Minor injuriesLimited investigationFinal reportBell 47G-II · Rialto, CAThe pilot's loss of directional control and subsequent overcontrol while hovering. Contributing to the accident were the gusty wind conditions and the pilot's inexperience.NTSB LAX90DVM01Accident · No injuriesFinal reportBell 47G-5 · Guadalupe, CAThe pilot's failure to maintain sufficient clearance allowing the aircraft to collide with a wooden power pole. Contributing to the accident was the sunglare which inhibited the pilot's vision.NTSB LAX89DVA07Accident · No injuriesFinal reportTexas Helicopter OH-13E/M74 · Hilmar, CAThe pilot's loss of directional control during an attempted takeoff from a loading platform.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 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 LAX87DVM03Accident · No injuriesFinal reportBell 47G-5 · Salinas, CAAt the end of an aerial application operation, enroute to the airport, the engine quit. The pilot autorotated the helicopter onto a soft field, where on touchdown, the helicopter was substantially damaged. Inspection of the helicopter revealed that the fuel…NTSB LAX86FVD07Accident · No injuriesFinal reportBell 47G-2 · Stockton, CAThe pilot was making a slow pass and dragged one spray boom on the ground. Insufficient airspeed resulted in loss of control. Helicopter crashed.NTSB LAX86LA231Accident · Serious injuriesLimited investigationFinal reportBell 47G-5 · Castaic, CAThe helicopter collided with unmarked wires while heading into sun during spraying operation. Plt does not recall seeing or hitting wires.NTSB LAX86LUG01Accident · No injuriesFinal reportTexas Helicopter M74A · Daggett, CAThe plt stated he had just lifted off for a fertilizer spreading operation with an external load bucket, when the eng had a partial pwr loss at 100 ft AGL. A descent was started and the bucket was disengaged. However, while the plt was attempting to land the…NTSB LAX85LA344Accident · Minor injuriesLimited investigationFinal reportBell 47G-2 · Big Bear City, CAOn August 12, 1985, a Bell 47G2 helicopter collided with a yucca tree and rolled over during a landing near Big Bear City, CA. The acft sustained substantial damage and the plt and his two passengers were not injured. The purpose of the flight was a aerial…NTSB LAX84LA501Accident · Minor injuriesLimited investigationFinal reportBell 47G-2 · Borrego Springs, CAAfter landing, the plt hover taxied to the fuel pumps to refuel. While maneuvering to touch down at the pumps, the main rotor blade struck a 10 to 12 ft high vent pipe. The plt reported that the vent pipes were painted black & were not readily apparent with…NTSB LAX84LA464Accident · No injuriesLimited investigationFinal reportBell 47G-5 · Watsonville, CAThe plt maneuvered during an aerial application flt to avoid high tension wires and collided with lower telephone lines. The plt said the winds were gusty at the time of the accident.NTSB LAX84LA462Accident · No injuriesLimited investigationFinal reportBell 47G-2 · El Cajon, CAThe helicopter made a hard landing during a test flt. The plt reported that the collective was very stiff and he was notable to stop the descent during landing. FAA inspected the helicopter after the accident and found no discrepancies in the control system…