# NTSB investigations: Franklin 6VS-335 series, 1983

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 FTW84LA099](https://openairdocs.org/ntsb/FTW84LA099.md): Hiller UH-12C · Imperial, TX · Accident · No injuries · Limited investigation · Final report · Dec 16, 1983 · N63MC · Substantial damage
  > The plt reported that when he was in cruise flt at 300 ft AGL, a sudden violent shudder went thru the whole helicopter, then the shudder stopped. He noted no change in the flit characteristics or eng power. The plt elected to make a precautionary landing by…
- [NTSB ATL83LA315](https://openairdocs.org/ntsb/ATL83LA315.md): Bell 47D1 · Moultrie, GA · Accident · Minor injuries · Limited investigation · Final report · Aug 6, 1983 · N68632 · Substantial damage
  > After completing a swath run, the plt pulled up, made a turn, then started a let down for another pass. As he increased power, the eng RPM went from 3000 to 3100. At the same time, the plt heard a whining noise and noted that the rotor RPM was decreasing. The…
- [NTSB SEA83LA132](https://openairdocs.org/ntsb/SEA83LA132.md): Hiller UH-12B · Jerome, ID · Accident · No injuries · Limited investigation · Final report · Jun 23, 1983 · N245C · Substantial damage
  > The acft was destroyed by fire after a forced landing due to pwr loss. The pilot stated that he was en route home after an aerial application mission when the engine lost power. He made an auto-rotation downwind and after exiting the acft noticed an engine…
- [NTSB NYC83FHM01](https://openairdocs.org/ntsb/NYC83FHM01.md): Bell 47G · Plainsboro, NJ · Accident · Minor injuries · Final report · May 15, 1983 · N6597D · Destroyed
  > The acft collided with the ground after a tail rotor drive shaft failed. The plt lost tail rotor control during an aerial application maneuver. The metallurgist report of examination and discovery of fatigue fracture after the accident is a part of the…

## 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") = 1983
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27040'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27040&year=1983

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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.