# NTSB investigations: Lycoming VO-435 series, OR

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 SEA94LA064](https://openairdocs.org/ntsb/SEA94LA064.md): Hiller-Soloy H-23D · Seaside, OR · Accident · Minor injuries · Limited investigation · Final report · Feb 23, 1994 · N62413 · Destroyed
  > The pilot's improper use of flight controls resulting in settling with power.
- [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 SEA85LA126](https://openairdocs.org/ntsb/SEA85LA126.md): Hiller UH-12E · Athena, OR · Accident · No injuries · Limited investigation · Final report · May 31, 1985 · N37HS · Destroyed
  > The acft settled back to the ground shortly after takeoff before achieving translatioanal lift. The plt was attempting to test a new spray unit that had been installed. He had put 80 gallons of water in the spray tanks.
- [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 &…
- [NTSB SEA82DA057](https://openairdocs.org/ntsb/SEA82DA057.md): Hiller-Soloy 12E · Christmas Valle, OR · Accident · Serious injuries · Final report · Apr 23, 1982 · N62377 · Minor damage
  > The helicopter was being used to string a transmission line. A rope (attach line) was used to connect the helicopter to the transmission line. The rope became detached and the pilot landed to have it reattached. A man, involved in the ground operations,…
- [NTSB SEA81FYM09](https://openairdocs.org/ntsb/SEA81FYM09.md): Bell 47G-3 · Buell, OR · Accident · Minor injuries · Closed · Nov 22, 1980 · N6784D · Substantial damage
- [NTSB SEA75DYC40](https://openairdocs.org/ntsb/SEA75DYC40.md): Bell 47G-2A · Corvallis, OR · Accident · Serious injuries · Closed · May 31, 1975 · N5161B · Destroyed
- [NTSB SEA73FYC37](https://openairdocs.org/ntsb/SEA73FYC37.md): Bell 47G-3B · Warm Springs, OR · Accident · Serious injuries · Closed · Jun 21, 1973 · N1324X · Destroyed
- [NTSB SEA72DYC08](https://openairdocs.org/ntsb/SEA72DYC08.md): Bell 47G3B1 · Legrande, OR · Accident · No injuries · Closed · Jul 20, 1971 · N1324X · Destroyed
- [NTSB SEA65A0045](https://openairdocs.org/ntsb/SEA65A0045.md): Bell 47G3 · Lagrande, OR · Accident · No injuries · Closed · Mar 6, 1965 · N6784D · Destroyed

## 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."eventStateOrRegion" = 'OR' AND c."eventCountry" = 'USA'
  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&state=OR

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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.