# NTSB investigations: Lycoming VO-435 series, 1984 NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. ## Latest cases - [NTSB MIA85FA016](https://openairdocs.org/ntsb/MIA85FA016.md): Bell 47G-5A · Belle Glade, FL · Accident · No injuries · Field investigation · Final report · Oct 22, 1984 · N59424 · Substantial damage > Acft wad parked with 3 ft clearance between main rotor and corner of hangar. Plt stated that on lift off a gust of wind blew acft toward hangar. Main rotor blades made contact. Ground crewman injured by flying debris. - [NTSB LAX84LA501](https://openairdocs.org/ntsb/LAX84LA501.md): Bell 47G-2 · Borrego Springs, CA · Accident · Minor injuries · Limited investigation · Final report · Sep 29, 1984 · N28895 · Substantial damage > After 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 ATL84LA295](https://openairdocs.org/ntsb/ATL84LA295.md): Bell 47G-5 · Bluefield, WV · Accident · Minor injuries · Limited investigation · Final report · Sep 24, 1984 · N1398X · Substantial damage > The pilot stated that he hovered the helicopter, made a right pedal turn and initiated a hover taxi across a rocky ravine adjacent to the pad. When over the ravine the helicopter settled onto to boulders beneath it. The pilot also stated that he thought he… - [NTSB LAX84LA464](https://openairdocs.org/ntsb/LAX84LA464.md): Bell 47G-5 · Watsonville, CA · Accident · No injuries · Limited investigation · Final report · Aug 29, 1984 · N4096G · Substantial damage > The 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 LAX84LA462](https://openairdocs.org/ntsb/LAX84LA462.md): Bell 47G-2 · El Cajon, CA · Accident · No injuries · Limited investigation · Final report · Aug 29, 1984 · N18807 · Substantial damage > The 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… - [NTSB LAX84LA424](https://openairdocs.org/ntsb/LAX84LA424.md): Bell 47G-5A · Winterhaven, CA · Accident · No injuries · Limited investigation · Final report · Aug 1, 1984 · N4099G · Substantial damage > The acft collided with the ground during a takeoff attempt. According to the plt, after the acft was loaded with 60 gallons of pesticide a takeoff was begun. The acft became airborne and traveled about 300 ft when the plt inadvertantly allowed the rotor RPM… - [NTSB CHI84LA317](https://openairdocs.org/ntsb/CHI84LA317.md): Bell 47-G2 · Jeffersonville, OH · Accident · No injuries · Limited investigation · Final report · Jul 29, 1984 · N59H · Substantial damage > The 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 CHI84LA263](https://openairdocs.org/ntsb/CHI84LA263.md): Hiller UH 12 D · Deerfield, WI · Accident · Minor injuries · Limited investigation · Final report · Jun 26, 1984 · N62362 · Substantial damage > Plt was aware of pwr lines which crossed the field over which he was performing a calibration test. Plt stated that because of sun glare visual contact with the wires was lost. The acft contacted the wires. - [NTSB NYC84LA226](https://openairdocs.org/ntsb/NYC84LA226.md): Bell 47J · Cranbury, NJ · Accident · No injuries · Limited investigation · Final report · Jun 20, 1984 · N9398H · Substantial damage > The 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 SEA84LA132](https://openairdocs.org/ntsb/SEA84LA132.md): Bell 47G2A · Buena, WA · Accident · No injuries · Limited investigation · Final report · Jun 14, 1984 · N11VH · Substantial damage > Main rotor blades contacted a wind machine during an aerial application flt. Helicopter settled into trees and rolled over. Plt said he knew the machine was there but had forgotten. - [NTSB LAX84LA341](https://openairdocs.org/ntsb/LAX84LA341.md): Bell 47G-5 · Oceanside, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 9, 1984 · N2252W · Substantial damage > A 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 NYC84FGT02](https://openairdocs.org/ntsb/NYC84FGT02.md): Bell 47G-3 · Landisburg, PA · Accident · No injuries · Final report · Jun 4, 1984 · N49882 · Substantial damage > The 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 ANC84LA097](https://openairdocs.org/ntsb/ANC84LA097.md): Piper PA-32-260 · Igiugig, AK · Accident · No injuries · Limited investigation · Final report · Jun 2, 1984 · N4732S · Substantial damage > During flt, the plt heard a 'loud bang' & then the eng lost power. He transmitted a mayday call & made an emergency landing on rolling tundra. During the landing, the nose & left main gear failed & the wing & prop were damaged. An exam revealed that the eng… - [NTSB SEA84LA066](https://openairdocs.org/ntsb/SEA84LA066.md): Hiller UH-12E · Forest Grove, OR · Accident · No injuries · Limited investigation · Final report · Mar 12, 1984 · N62377 · Substantial damage > The plt reported that while hovering, during an external load operation, the eng lost power & blue smoke & flames exited the back of the helicopter. The helicopter then struck trees before coming to rest. During an investigation, the eng started normally &… ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 year(c."eventDate") = 1984 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 ``` This list as a web page: https://openairdocs.org/ntsb?engine=41525&year=1984 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.