# NTSB investigations: Lycoming VO-435 series, 1988 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 LAX88DUG07](https://openairdocs.org/ntsb/LAX88DUG07.md): Bell 47G-5A · Perris, CA · Accident · No injuries · Final report · Sep 18, 1988 · N4099G · Substantial damage > On liftoff, tail rotor control was lost and helicopter spun with main rotor striking terrain. Investigation revealed fatigue failure of engine mounting cage. The eng basket had failed and allowed the t/r drive shaft to pull out of the coupling. The basket had… - [NTSB LAX88DUQ04](https://openairdocs.org/ntsb/LAX88DUQ04.md): Texas Helicopter M74A · Lancaster, CA · Accident · No injuries · Final report · Aug 19, 1988 · N51862 · Substantial damage > During 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 NYC88LA214](https://openairdocs.org/ntsb/NYC88LA214.md): Bell 47G5 · Biddeford, ME · Accident · Minor injuries · Limited investigation · Final report · Aug 11, 1988 · N14861 · Substantial damage > The 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 MIA88LA250](https://openairdocs.org/ntsb/MIA88LA250.md): Continental Copters MK-5A · Valley Park, MS · Accident · Minor injuries · Limited investigation · Final report · Aug 10, 1988 · N9086T · Substantial damage > The 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 CHI88DEX11](https://openairdocs.org/ntsb/CHI88DEX11.md): Continental Copters MK-5 · Redkey, IN · Accident · 1 fatal · Final report · Aug 10, 1988 · N25561 · Destroyed > Physical impairment of the pilot due to drugs which resulted in a misjudged approach and subsequent contact with trees during the approach to an aerial application swath run. - [NTSB CHI88DET05](https://openairdocs.org/ntsb/CHI88DET05.md): Bell 47J · Dowagiac, MI · Accident · No injuries · Final report · Aug 5, 1988 · N2838B · Substantial damage > Failure to maintian adequate rotor RPM by the unqualified pilot. - [NTSB CHI88DEX08](https://openairdocs.org/ntsb/CHI88DEX08.md): Continental Copters Tomcat MK-6 · Straughn, IN · Accident · No injuries · Final report · Jul 11, 1988 · N9093T · Substantial damage > Aerial application helicopter struck power lines in field on first swath run. This was the first time the pilot had sprayed this field. Prior to spraying the field he questioned the farmer regarding power lines or other obstructions. The farmer replied that… - [NTSB MIA88LA186](https://openairdocs.org/ntsb/MIA88LA186.md): Continental Copters MK6B · Callahan, FL · Accident · No injuries · Limited investigation · Final report · Jun 1, 1988 · N9080T · Substantial damage > While maneuvering the helicopter during an aerial application flt the eng quit. During the autorotative landing the helicopter landed hard. Examination of the eng revealed the accessory drive gear, which is attached to the crankshaft by 6 AN-4A bolts with the… - [NTSB CHI88DEM05](https://openairdocs.org/ntsb/CHI88DEM05.md): Bell 47G-2A · Midland, MI · Accident · No injuries · Final report · May 31, 1988 · N440TG · Substantial damage > The 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 MKC88LA092](https://openairdocs.org/ntsb/MKC88LA092.md): Bell 47G-2 · Mc Dougal, AR · Accident · No injuries · Limited investigation · Final report · May 19, 1988 · N4690 · Substantial damage > The pilot stated that he had just begun the spraying of a rice field when one of the spray nozzles malfunctioned. As he was attempting to set the helicopter down on the ground, to work on the nozzle, the main rotor blades struck a tree. The main rotor blades… - [NTSB LAX88LA126](https://openairdocs.org/ntsb/LAX88LA126.md): Bell 47G-2A-1 · Oceanside, CA · Accident · Minor injuries · Limited investigation · Final report · Mar 11, 1988 · N73969 · Destroyed > The 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 FTW88DRA03](https://openairdocs.org/ntsb/FTW88DRA03.md): Hiller UH-12-D · Bon-Wier, TX · Accident · Serious injuries · Final report · Feb 17, 1988 · N48265 · Destroyed > Ground crewmember's failure to follow established procedures for secureing the aircraft to the transport trailer. ## 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") = 1988 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=1988 --- 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.