NTSB investigations: Lycoming VO-435 series, TX
40 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 | 1 |
|---|---|
| 1968 | 1 |
| 1969 | 2 |
| 1970 | 3 |
| 1972 | 1 |
| 1973 | 2 |
| 1974 | 1 |
| 1976 | 1 |
| 1977 | 3 |
| 1978 | 2 |
| 1979 | 2 |
| 1982 | 1 |
| 1985 | 2 |
| 1987 | 1 |
| 1988 | 1 |
| 1991 | 2 |
| 1992 | 1 |
| 1995 | 2 |
| 1996 | 2 |
| 1999 | 1 |
| 2001 | 1 |
| 2004 | 1 |
| 2006 | 1 |
| 2007 | 1 |
| 2009 | 1 |
| 2016 | 1 |
| 2019 | 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.\"eventStateOrRegion\" = 'TX' 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" = 'TX' 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 GAA19CA250Accident · No injuriesData collectionFinal reportBell 47G · Denton, TXThe flight instructor's improper decision to instruct the student pilot to establish a hover and reposition the helicopter with a tailwind, which resulted in the student pilot's loss of pitch control.NTSB GAA19CA216Accident · No injuriesData collectionFinal reportBell 47G · Donna, TXThe pilot's failure to maintain altitude during an agricultural application flight.NTSB CEN16LA213Accident · Minor injuriesLimited investigationFinal reportBell 47G 5 · Laureles, TXThe pilot's failure to apply additional engine power when he applied collective input, which led to a loss of rotor speed and the exceedance of the helicopter’s performance capability.NTSB CEN09LA324Accident · Serious injuriesLimited investigationFinal reportBell 47G · Kyle, TXThe ground crewmember's failure to assure that the fuel nozzle was closed before pressurizing the line. Contributing to the accident was the lack of an available fire extinguisher.NTSB DFW07CA156Accident · Minor injuriesData collectionFinal reportBell 47G-2A · Mercedes, TXThe pilot's failure to maintain clearance from the power transmission line.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 FTW04CA207Accident · No injuriesData collectionFinal reportBell 47G-3B-1 · Troy, TXThe flight instructor's improper flare, resulting in a hard landing. A contributing factor was the high density altitude.NTSB FTW01LA202Accident · Minor injuriesLimited investigationFinal reportHiller UH-12D · Lubbock, TXthe failure of the tail rotor drive shaft hanger bearing, which resulted in the separation of the tail rotor drive shaft. A contributing factor was the lack of suitable terrain for the forced landing.NTSB FTW99TA194Accident · No injuriesFinal reportBell 47G-3B-1 · Sour Lake, TXThe pilot's failure to adequately preflight the helicopter's fuel system resulting in the total loss of engine power as a result of water contamination. Factors were the incorrect filter installed on the fueling truck and the pilot's improper touchdown…NTSB FTW96LA229Accident · No injuriesLimited investigationFinal reportBell 47J · Lakeway, TXThe pilot's failure to maintain a proper descent rate prior to landing.NTSB FTW96LA121Accident · No injuriesLimited investigationFinal reportHiller UH-12D · Carrizo Springs, TXa loss of engine power for undetermined reasons, and the pilot's improper touchdown.NTSB FTW96LA008Accident · Minor injuriesLimited investigationFinal reportBell 47-G2 · Freer, TXthe pilot's failure to maintain clearance from the power lines due to his improper takeoff technique. A factor was the helicopter induced blowing dust which impaired the pilot's visibility.NTSB FTW95LA239Accident · No injuriesLimited investigationFinal reportBell 47G-5 · Falfurrias, TXInadvertent installation of an unapproved part (tail rotor gear/drive assembly), that became excessively worn since it did not conform to the manufacturer's specification, resulting in failure of the associated tail rotor bearing (also an unapproved part),…NTSB FTW92LA159Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Danbury, TXThe failure of the landing gear skid due to internal corrosion. A factor was the soft ground.NTSB FTW92LA044Accident · No injuriesLimited investigationFinal reportHiller-Osborn UH-12D · Rio Medina, TXThe pilot's improper flare during touchdown.NTSB FTW91LA166Accident · Minor injuriesLimited investigationFinal reportBell 47G-5A · Pearsall, TXThe pilot's failure to maintain adequate visual lookout for obstacles during operations from a remote site.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.NTSB FTW88LA008Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Lapra, TXUpon entering a bank approx. 80 to 100 ft. off the ground, the aircraft experienced a power loss with vibration. During autorotation the aircraft contacted a tree causing substantial damage. Examination of the wreckage found the transmission clutch assembly…NTSB FTW85LA288Accident · No injuriesLimited investigationFinal reportBell 47G-5 · Crane, TXThe helicopter was being operated from a flat bed trailer. The plt stated he had lifted to a 3 foot hover when the eng stopped. The helicopter suddenly rotated about 45 degs before he could stop it. The plt attempted to make an autorotation touchdown but was…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 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…NTSB FTW80DRG09Accident · No injuriesClosedBell 47G-5A · Alice, TXNTSB FTW79FRG13Accident · Serious injuriesClosedBell 47G-4A · Falfurrias, TXNTSB FTW79FRG10Accident · No injuriesClosedBell 47G-2 · Alamo, TXNTSB FTW78DRG40Accident · No injuriesClosedBell 47G-2A · Rio Grande C., TXNTSB FTW78FPA08Accident · No injuriesClosedBell 47J · Addison, TXNTSB FTW78DQD05Accident · No injuriesClosedBell 47J · El Paso, TXNTSB FTW78DRG08Accident · No injuriesClosedBell 47G-2 · Edinburg, TXNTSB FTW76DRG70Accident · No injuriesClosedBell 47G-2 · Mcallen, TXNTSB FTW75FRG48Accident · Serious injuriesClosedBell 47GB31 · Freer, TXNTSB FTW74DRG16Accident · No injuriesClosedBell 47G-2 · Harlingen, TXNTSB FTW73DRG47Accident · No injuriesClosedBell 47G-5 · Harlingen, TXNTSB FTW73DRG30Accident · No injuriesClosedBell 47G-5 · Harlingen, TXNTSB FTW71DRG55Accident · No injuriesClosedBell 47G-2 · Corpus Chrsti, TXNTSB FTW70DPD12Accident · No injuriesClosedBell 47G4 · Stamford, TXNTSB FTW70FPD03Accident · No injuriesClosedBell 47G-5 · Saginaw, TXNTSB FTW70F0204Accident · No injuriesClosedBell 47G-2 · Friendswood, TXNTSB FTW69F0500Accident · Minor injuriesClosedBell 47G-2 · Amarillo, TXNTSB FTW69F0318Accident · No injuriesClosedBell 47G-2 · Watauga, TXNTSB UNK64X2134Accident · No injuriesClosedBell 47G2 · Fort Worth, TX