# NTSB investigations: Franklin 6V-335 series, CA

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 LAX85LA309](https://openairdocs.org/ntsb/LAX85LA309.md): Hiller UH-12B · Durham, CA · Accident · No injuries · Limited investigation · Final report · Jul 7, 1985 · N1048P · Substantial damage
  > The purpose of the LCL flight was for the CFI to demo the newly acquired helicopter to its owner. The CFI reported that during the flt a 'somewhat common' vibration was detected, & he associated the vibration with the acft's wooden main rotor blades. He…
- [NTSB LAX84FA106](https://openairdocs.org/ntsb/LAX84FA106.md): Hiller UH-12A · Van Nuys, CA · Accident · No injuries · Field investigation · Final report · Dec 16, 1983 · N8108H · Substantial damage
  > The instructor plt (CFI) stated that the eng quit 2 times after he refueled the helicopter. He then drained a quantity of water from the fuel gascolator & restarted the helicopter. After that he air taxied the helicopter to the flt school where, without…
- [NTSB OAK68A0036](https://openairdocs.org/ntsb/OAK68A0036.md): Hiller UH-12C · Riverdale, CA · Accident · No injuries · Closed · Oct 15, 1967 · N5321V · Substantial damage
- [NTSB UNK64X4188](https://openairdocs.org/ntsb/UNK64X4188.md): Bell 47G · Bakersfield, CA · Accident · No injuries · Closed · Sep 27, 1964 · N970B · Substantial damage

## 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" = 'CA' 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 ('27039'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27039&state=CA

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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.