NTSB investigations: Lycoming VO-435 series
29 cases on aircraft whose registry engine model is Lycoming VO-435 series, where the first occurrence was “Loss of control - in flight”. 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
| 1982 | 2 |
|---|---|
| 1984 | 3 |
| 1985 | 1 |
| 1986 | 1 |
| 1987 | 2 |
| 1988 | 3 |
| 1989 | 2 |
| 1991 | 1 |
| 1995 | 2 |
| 1996 | 2 |
| 1997 | 1 |
| 1998 | 1 |
| 2000 | 1 |
| 2001 | 2 |
| 2003 | 1 |
| 2006 | 2 |
| 2007 | 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 c.\"mKey\" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41525')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 250))
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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41525')
AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 250))
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 CHI08CA019Accident · No injuriesData collectionFinal reportBell 47G-2A · Wautoma, WIThe pilot's failure to maintain control of the helicopter resulting from a distraction in the cockpit. A contributing factor was the distraction due to the dog in the cockpit.NTSB CHI07CA212Accident · No injuriesData collectionFinal reportBell 47G-5 · Jesup, IAThe pilot's inability to maintain control of the helicopter when it unexpectedly encountered a whirlwind shortly after takeoff.NTSB DFW06CA123Accident · Minor injuriesData collectionFinal reportBell 47G-2 · Rosenberg, TXThe pilots encounter with loss of tail rotor effectiveness during an aerial application flight. A contributing factor was the gusty winds.NTSB NYC06FA100Accident · 2 fatalField investigationFinal reportBell 47G-3B-1 · East Hanover Tw, PAThe pilot's improper decision to hover out-of-ground-effect in a tailwind, and his failure to maintain aircraft control. A factor in the accident was the tailwind.NTSB NYC03CA170Accident · No injuriesData collectionFinal reportBell 47G-2A · Jackson, NJPilot's inadequate preflight inspection and failure to remove a pesticide spraying hose from the helicopter prior to takeoff, which resulted in a loss of control.NTSB MIA02FA045Accident · 4 fatalField investigationFinal reportPiper PA-32-260 · Jacksonville, FLThe pilot becoming spatially disoriented and losing control of the airplane during a missed approach resulting in the airplane descending uncontrolled and colliding with trees and the ground.NTSB NYC01LA130Accident · No injuriesLimited investigationFinal reportContinental Copters Tom Cat Mark 5A · Benton, PAThe pilot's inadequate preflight inspection, which resulted in a takeoff with a hose still attached and a subsequent dynamic rollover.NTSB CHI00LA204Accident · Minor injuriesLimited investigationFinal reportBell 47G-3B-1 · Holstein, NEthe settling with power encountered by the pilot. A factor was the sudden windshift.NTSB LAX98LA309Accident · No injuriesLimited investigationFinal reportTexas Helicopter OH-13H · Gilroy, CAThe pilot's loss of control for undetermined reasons.NTSB NYC98LA023Accident · No injuriesLimited investigationFinal reportHiller UH-12D · Farmingdale, NJThe certificated flight instructor's inadequate supervision and failure to maintain directional control.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 FTW96LA229Accident · No injuriesLimited investigationFinal reportBell 47J · Lakeway, TXThe pilot's failure to maintain a proper descent rate prior to landing.NTSB FTW95LA310Accident · Serious injuriesLimited investigationFinal reportWilliams Bell OH13H/Tomcat MK5A · Alicia, ARThe pilot's failure to remove the refueling hose. A factor was that he diverted his attention from the refueling operation.NTSB NYC95LA100Accident · Minor injuriesLimited investigationFinal reportBell 47G-5A · Middleboro, MAthe pilot's failure to maintain airspeed during a low altitude aerial application turn, which resulted in inadvertent settling with power and the subsequent collision with the terrain.NTSB FTW91LA091Accident · No injuriesLimited investigationFinal reportBell 47D-1 · Peach Orchard, ARThe pilot's failure to maintain adequate main rotor RPM resulting in deteriorated helicopter performance. A factor was the tailwind condition.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 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 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 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 SEA88LA014Accident · No injuriesLimited investigationFinal reportBell 47G2 · Lebanon, ORThe student was performing an autorotation at about 50' AGL and the flare was begun. The instructor pilot noticed that the helicopter was not leveling and took control of the aircraft. The helicopter settled tail low onto the soft ground striking the tail…NTSB MIA87LA145Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Rolling Fork, MSWhile landing downwind, at an alt of aprx 20 feet, the helicopter began to settle with power. The pilot then attempted to stop the descent, however, because of insufficient alt & airspeed, was unable. The helicopter then landed hard, rolled over, after which,…NTSB LAX86LA211Accident · 1 fatalLimited investigationFinal reportBell 47G-5A · AganaThe helicopter crashed into the ocean when the plt attempted to lift off from a tuna boat. Reportedly, only three of the four tiedown ropes, which had secured the helicopter to the boat, had been released. The plt's medical certificate was dated 1/18/84.NTSB FTW85LA135Accident · No injuriesLimited investigationFinal reportHiller UH-12D · Big Spring, TXCFI was demonstrating a simulated eng failure with tailwind of 10 KTS, 20 KTS grnd speed. The acft yawed left and touchdown was made with 10 kt grnd speed. The right skid broke off and the acft rolled over. The maneuver was initiated at 4 ft skid height.NTSB CHI84LA317Accident · No injuriesLimited investigationFinal reportBell 47-G2 · Jeffersonville, OHThe acft started to settle with power during takeoff after the acft was loaded with chemicals. The plt said he had a choice of, going through a fence or over it and decided to go over it. Pulling collective bled off m/r and the acft stopped flying. The tail…NTSB NYC84LA226Accident · No injuriesLimited investigationFinal reportBell 47J · Cranbury, NJThe helicopter had made 4 successful spray passes during this series of runs after reloading. During the turn to start the fifth pass the acft started to settle and contacted the ground before recovery could be made.NTSB LAX84LA341Accident · Minor injuriesLimited investigationFinal reportBell 47G-5 · Oceanside, CAA security guard with no flight experience attempted to fly the helicopter which he was guarding during early morning hours after substantial alcoholic beverage consumption. The acft sustained substantial damage when it touched down on the rt skid aprx 15 ft…NTSB ATL83LA011Accident · No injuriesLimited investigationFinal reportTomcat MK68 · Cope, SCBefore starting his takeoff from a trailer, the pilot failed to insure that his helper had released the right rear tiedown chain. During lift-off, the helicopter raised the trailer about 2 to 3 ft before the chain. Broke. Simultaneously, the helicopter was…NTSB FTW82IA268Incident · No injuriesIncident investigationFinal reportBell 47G2A1 · Near Mertzon, TXWhile the aircraft was being hovered low and slow around a water trough, directional control was lost. The pilot autorotated to the ground and on touchdown the right skid buckled and the tailrotor gearbox separated when it struck an ant hill. The pilot…