# NTSB investigations: Lycoming VO-435 series, 1987 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 SEA88LA014](https://openairdocs.org/ntsb/SEA88LA014.md): Bell 47G2 · Lebanon, OR · Accident · No injuries · Limited investigation · Final report · Oct 26, 1987 · N6141 · Substantial damage > The student was performing an autorotation at about 50' AGL and the flare was begun. The instructor pilot noticed that the helicopter was not leveling and took control of the aircraft. The helicopter settled tail low onto the soft ground striking the tail… - [NTSB FTW88LA008](https://openairdocs.org/ntsb/FTW88LA008.md): Bell 47G-2 · Lapra, TX · Accident · No injuries · Limited investigation · Final report · Oct 20, 1987 · N8403E · Substantial damage > Upon 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 FTW87DPJ09](https://openairdocs.org/ntsb/FTW87DPJ09.md): G&C Helicopters EL Tomcat MK5A · Marlow, OK · Accident · Serious injuries · Final report · Sep 23, 1987 · N17315 · Substantial damage > Pilot failed to see and avoid tree at end of swath run during a spraying operation. After contacting the tree, the helicopter started to spin and struck the ground in an approximate 90 degree right bank and started to burn. - [NTSB ATL87LA249](https://openairdocs.org/ntsb/ATL87LA249.md): Bell 47G3B1 · Enterprise, AL · Accident · No injuries · Limited investigation · Final report · Sep 6, 1987 · N38CD · Substantial damage > During a practice autorotation, the instructor pilot delayed in appling power to arrest the autorotative descent. The other pilot reported that the autorotation profile was was not the same as the previous successful autorotation. There were no reported… - [NTSB MIA87FA236](https://openairdocs.org/ntsb/MIA87FA236.md): Cessna 152 · Opa Locka, FL · Accident · 1 fatal · Field investigation · Final report · Aug 31, 1987 · N48864 · 2 aircraft · Substantial damage > A student plt & instructor (CFI) in Cessna 152, N48864, took off & entered rgt traffic to practice lndgs on rwy 9R. Soonthereafter, a helicopter plt (h/p) in a bell 47G-2, N6728D, took off & entered rgt traffic to practice lndgs in a desig-nated helicopter… - [NTSB ATL87LA222](https://openairdocs.org/ntsb/ATL87LA222.md): Bell 47G-2 · Huntsville, AL · Accident · Minor injuries · Limited investigation · Final report · Jul 23, 1987 · N972B · Substantial damage > The helicopter impacted the water during a low-altitude turn over a river. The plt made a low pass to the south over an island at about 30 ft AGL, to show the island to the policewoman/traffic observer onboard. As he was making a climbing right turn at about… - [NTSB LAX87DVM03](https://openairdocs.org/ntsb/LAX87DVM03.md): Bell 47G-5 · Salinas, CA · Accident · No injuries · Final report · Jun 28, 1987 · N6288N · Substantial damage > At 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 CHI87DEV02](https://openairdocs.org/ntsb/CHI87DEV02.md): Bell 47G2 · Peoria Heights, IL · Accident · No injuries · Final report · Jun 22, 1987 · N15395 · Substantial damage > Returning 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 MIA87LA145](https://openairdocs.org/ntsb/MIA87LA145.md): Bell 47G-2 · Rolling Fork, MS · Accident · No injuries · Limited investigation · Final report · Apr 25, 1987 · N202CH · Substantial damage > While landing downwind, at an alt of aprx 20 feet, the helicopter began to settle with power. The pilot then attempted to stop the descent, however, because of insufficient alt & airspeed, was unable. The helicopter then landed hard, rolled over, after which,… - [NTSB ANC87FA043](https://openairdocs.org/ntsb/ANC87FA043.md): Bell 47G-2 · Anchorage, AK · Accident · No injuries · Field investigation · Final report · Mar 7, 1987 · N6140C · Substantial damage > A flight instructor and his commercial rotorcraft student were practicing quick stops to a hover at low altitude over a snow covered non-maintained airstrip. The student, a commercially rated fixed wing pilot, had successfully completed three quick stops, but… ## 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") = 1987 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=1987 --- 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.