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 engine power(total) - nonmechanical”. 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 |
|---|---|
| 1983 | 4 |
| 1984 | 1 |
| 1985 | 4 |
| 1986 | 1 |
| 1987 | 2 |
| 1988 | 2 |
| 1989 | 2 |
| 1991 | 1 |
| 1992 | 2 |
| 1994 | 2 |
| 1995 | 1 |
| 1996 | 1 |
| 1998 | 1 |
| 1999 | 1 |
| 2004 | 1 |
| 2006 | 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.\"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\" = 353))
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" = 353))
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 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 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 IAD99LA024Accident · Serious injuriesLimited investigationFinal reportBell 47-G5 · Essex Junction, VTthe pilot's improper entry into the autorotation, which resulted in the loss of power and a low rotor rpm condition. Also causal was the pilot's improper execution of the autorotation which resulted in the hard landing. Factors in the accident were the…NTSB LAX96LA287Accident · No injuriesLimited investigationFinal reportBell 47-G5 · Lost Hills, CAimproper installation of the carburetor air box.NTSB LAX95LA138Accident · No injuriesLimited investigationFinal reportBell 47 · Harmon Fieldan engine failure due to oil exhaustion from a missing oil pressure relief valve as the result of an improper maintenance inspection.NTSB LAX94LA303Accident · No injuriesLimited investigationFinal reportBell 47G-2A · Scottsdale, AZThe pilot's failure to refuel appropriately, the altitude and airspeed at the time the engine stoppage occurred were factors in the accident.NTSB NYC94LA110Accident · Minor injuriesLimited investigationFinal reportBell 47-G5 · Wareham, MAThe pilot's inadequate inflight planning which resulted in fuel exhaustion and the loss of engine power.NTSB FTW92DPG15Accident · No injuriesFinal reportBell-Transworld 47G-2 · Birdeye, ARFuel contamination. A factor was the high density altitude.NTSB ATL92LA160Accident · Serious injuriesLimited investigationFinal reportBell 47G-2 · Slocomb, ALA hard landing due to a power loss from fuel exhaustion. A factor in the accident was the lack of sustable terrain for the landing.NTSB 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.NTSB MIA89LA213Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Sarasota, FLThe student pilot's inadequate preflight planning/preparation, which resulted in fuel exhaustion due to an inadequate supply of fuel. Factors related to the accident were: the student pilot's lack of total experience & tree(s) in the emergency landing area.NTSB CHI89DEX05Accident · No injuriesFinal reportTexas Helicopter OH-13H/M74A · New Richmond, INThe pilot's misjudgement of the fuel supply which resulted in fuel exhaustion.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 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 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 CHI87DEV02Accident · No injuriesFinal reportBell 47G2 · Peoria Heights, ILReturning from a powerline patrol flight, the engine surged twice and quit. The pilot executed an autorotation to the only available landing site, a high school football field. On touchdown the blades flexed and severed the tailboom. Investigation revealed…NTSB MIA86LA228Accident · Minor injuriesLimited investigationFinal reportContinental Copters Tomcat MK5A · Indiantown, FLThe aerial application helicopter crashed just after lift-off after sustaining a power failure, the plt stated that he thought the reason for the failure could have been fuel starvation since he had observed some foreign matter in the fuel when he drained the…NTSB CHI86FA017Accident · 1 fatalField investigationFinal reportBell 47G-5 · Plainfield, WIThe acft crashed into trees and nosed into the wooded terrain after a loss of powr. The helicopter had been refueled the day before the acc. Normal fuel load was 20 gals. The plt had sprayed 20 acres & flown 9 miles to another field to spray but aborted due…NTSB 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…NTSB SEA85LA155Accident · No injuriesLimited investigationFinal reportBell 47G2 · Roosevelt, WAA total loss of power occurred while on a CFR 137 flight, due to fuel exhaustion. Although the fuel gauge showed 1/2 tank of fuel, the pilot failed to visually check the fuel prior to this flight. During autorotation onto a wheat field a hard landing occurred…NTSB NYC85LA081Accident · No injuriesLimited investigationFinal reportBell 47G-3 · Plainsboro, NJThe helicpopter crashed shortly after takeoff with 55 gallons of fertilizer on board. The plt stated that each time he made a swath run over the field the blades of the helicopter were picking up some of the liquid fertilizer. On takeoff helicopter felt…NTSB NYC84FGT02Accident · No injuriesFinal reportBell 47G-3 · Landisburg, PAThe helicopter lost eng power while turning on approach for landing, autorotated to a hard landing with main rotor contact to the tail boom. Two gals of fuel were drained from the acft fuel tank at the accident site. An eng run up was performed & found…NTSB LAX83FA448Accident · No injuriesField investigationFinal reportBell 47G · Oceanside, CAShortly after takeoff, the eng lost power at an alt of aprx 400 ft AGL. An autorotative landing was made on uneven terrain beside a stream with weeds aprx 3 ft high. During touchdown, the main rotor struck the tail boom. An inspection of the engine revealed…NTSB MIA83LA212Accident · Minor injuriesLimited investigationFinal reportBell 47J · Labelle, FLWhile at an altitude of about 150 ft, the eng lost power. The plt initiated an autorotation, but during the landing, the main rotor struck trees & the helicopter was substantially damaged. The plt estimated there was 15 gal of fuel on board during the…NTSB LAX83FUM07Accident · No injuriesFinal reportBell 47G-5 · Valley Center, CAThe acft was damaged during a forced landing following a power loss while engaged in aerial application. The pilot took off with 25 gallons of fuel which he said was usually enough for spraying 40-50 acres. This job was 19 acres but it was 10-12 miles away at…NTSB SEA83LA122Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Zillah, WAThe rotorcraft made a hard landing after colliding with trees during an autorotation. The acft had experienced an enginefailure while on a repositioning flight between aerial application operations and was forced to land. The acft was autorotated into an…NTSB SEA82DA112Accident · Serious injuriesFinal reportBell 47G-2 · Harrah, WAThe pilot reported that before taking off, the fuel quantity guages indicated there was sufficient fuel to complete one more load and still have an adequate reserve. After dispensing the load, the engine lost power while he was returning to the nurse truck.…NTSB CHI82DA171Accident · Minor injuriesFinal reportBell 47G-5 · Sublette, ILPrior to this flight, the helicopter had been flown about 1 hr from roselle to Sublette, IL, then it was flown another 1/2 hr to survey the area to be sprayed. About 10 minutes after departing to spray, the engine lost power. The pilot started an autorotative…