# NTSB investigations: Lycoming TVO-435-GIA: Loss of control - in flight 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 DEN07LA155](https://openairdocs.org/ntsb/DEN07LA155.md): Bell 47G-3B-1 · Avondale, CO · Accident · No injuries · Limited investigation · Final report · Sep 12, 2007 · N360SS · Substantial damage > The pilot's failure to attain translational lift and his improper flare. A contributing factor in this accident was the sudden wind shift. - [NTSB DFW05CA231](https://openairdocs.org/ntsb/DFW05CA231.md): Bell 47 · Monette, AR · Accident · No injuries · Data collection · Final report · Aug 16, 2005 · N8494E · Destroyed > The loss of control as result of a loss of hydraulic pressure for undetermined reasons. - [NTSB SEA05CA122](https://openairdocs.org/ntsb/SEA05CA122.md): Bell 47G-3B-1 · Brewster, WA · Accident · Minor injuries · Data collection · Final report · Jun 19, 2005 · N8554F · Substantial damage > The pilot's inadvertent anti-torque pedal input, which resulted in a loss of control and collision with trees while hovering. - [NTSB ATL99LA105](https://openairdocs.org/ntsb/ATL99LA105.md): Bell 47 · Trenton, GA · Accident · Minor injuries · Limited investigation · Final report · Jul 2, 1999 · N23590 · Substantial damage > The loss of main rotor rpm due to improper use of the flight controls by the pilot. Factors were the tailwind and trees. - [NTSB SEA97LA158](https://openairdocs.org/ntsb/SEA97LA158.md): Bell 47G-3B-1 · Roosevelt, UT · Accident · Serious injuries · Limited investigation · Final report · Jul 5, 1997 · N8537F · Substantial damage > the pilot's failure to maintain directional control. Wind gusts were a factor. - [NTSB SEA97LA112](https://openairdocs.org/ntsb/SEA97LA112.md): Bell 47G-3B · Snohomish, WA · Accident · Minor injuries · Limited investigation · Final report · May 15, 1997 · N8491E · Substantial damage > the pilot's encounter with of a loss of tail rotor effectiveness (LTE) situation, and his subsequent inadequate remedial action. Related factors included: wind conditions that were conducive to an unanticipated right yaw event, and the pilot's limited… - [NTSB NYC92LA006](https://openairdocs.org/ntsb/NYC92LA006.md): Bell 47G-3B-1 · Catawissa, PA · Accident · Minor injuries · Limited investigation · Final report · Oct 12, 1991 · N5NH · Substantial damage > Pilot factor in that the pilot used poor judgement and loaded more passengers than were seats on the helicopter this resulted in control interference and subsequent loss of control. Contributing was the pilot's failure to check the weight and balance for the… - [NTSB MIA91LA217](https://openairdocs.org/ntsb/MIA91LA217.md): Bell 47G-3B-1 · Penuelas, PR · Accident · No injuries · Limited investigation · Final report · Sep 15, 1991 · N1397X · Substantial damage > Inadvertent control interference by a passenger shortly after takeoff resulting in the loss of control and roll over after touchdown. - [NTSB SEA89LA116](https://openairdocs.org/ntsb/SEA89LA116.md): Bell 47G3B2A · Dyer, NV · Accident · Minor injuries · Limited investigation · Final report · Jun 22, 1989 · N59414 · Destroyed > The pilots poor planning in attempting a hover in undesirable conditions which resulting in the inability to maintain rotor rom. Contributing to the accident was the mountainous terrain and high density alt. - [NTSB DEN87LA235](https://openairdocs.org/ntsb/DEN87LA235.md): Bell 47-G3B2 · Oakley, UT · Accident · No injuries · Limited investigation · Final report · Sep 10, 1987 · N1038X · Substantial damage > The plt had just taken off from a confined area surrounded on two sides with electrical power lines. As he attempted to climb, he said his RPM began to bleed off. He stated that he made a right pedal turn to avoid the wires but was unable to prevent a hard… - [NTSB SEA87LA118](https://openairdocs.org/ntsb/SEA87LA118.md): Bell 47G-3B-2 · Milton-Freewatr, OR · Accident · Minor injuries · Limited investigation · Final report · Jun 12, 1987 · N2219W · Destroyed > The pilot was hovering up rising terrain at a slow airspeed, at 15 feet above the ground while on an agricultural spraying flight and encountered settling with power. The aircraft entered an uncontrolled descent and impacted the ground. - [NTSB DEN86LA119](https://openairdocs.org/ntsb/DEN86LA119.md): Bell 47G-3B-2 · Santa Fe, NM · Accident · No injuries · Limited investigation · Final report · Apr 25, 1986 · N4073G · Substantial damage > According to the student plt, he was attempting to hover the helicopter when he encountered turbulence. The student plt stated that the hard landing which followed resulted in spreading the skids & severing the tailboom. - [NTSB DEN85LA144](https://openairdocs.org/ntsb/DEN85LA144.md): Continental Copters Tomcat Mark 5A/OH13H · Freeman, SD · Accident · Minor injuries · Limited investigation · Final report · May 29, 1985 · N9081T · Substantial damage > The plt said he had completed 4 to 5 swath runs (crop spraying mission). During a turning manuever with a left quatering tail wind, full left pedal,full pwr,the helicopter had a high sink rate until grd impact. - [NTSB SEA84LA162](https://openairdocs.org/ntsb/SEA84LA162.md): Bell 47G-3B · Eagle Point, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 5, 1984 · N73224 · Substantial damage > The acft main rotor struck the ground during landing. The commercial plt had taken 2 passengers for a sight seeing tour and during landing he said one of them grabbed his right arm at 4 ft AGL and he was unable to recover before ground contact. - [NTSB ATL84FA001](https://openairdocs.org/ntsb/ATL84FA001.md): Bell 47G-3B1 · Pliny, WV · Accident · 1 fatal · Field investigation · Final report · Oct 1, 1983 · N1334X · Destroyed > The helicopter was being used in the construction of elect transmission lines. A 150-FT longline cable had been utilizedon an earlier flight for lifting external loads. However, there was no reason for the longline to be attached on the accident flight as the… - [NTSB DEN83LA006](https://openairdocs.org/ntsb/DEN83LA006.md): Bell 47G3B1 · Malta, MT · Accident · Minor injuries · Limited investigation · Final report · Oct 2, 1982 · N7928S · Substantial damage > The pilot stated that he "was spraying the alfalfa field west to east" and that "there were tall cottonwood trees on three sides. A very sudden wind "came up" and "pushed" him into a tree. ## 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 c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41526') 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 ``` This list as a web page: https://openairdocs.org/ntsb?engine=41526&occurrence=250 --- 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.