# NTSB investigations: Franklin 6A&6V335 series: Loss of engine power

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 LAX01FA236](https://openairdocs.org/ntsb/LAX01FA236.md): Bell 47D-1 · Riverside, CA · Accident · No injuries · Field investigation · Final report · Jul 6, 2001 · N64580 · Substantial damage
  > The engine crankshaft's failure as the result of fatigue cracking initiated by surface damage and localized overheating due to the installation at overhaul of incorrectly sized bearings.
- [NTSB FTW00LA096](https://openairdocs.org/ntsb/FTW00LA096.md): Siai-Marchetti S.205/22R · Rayville, LA · Accident · No injuries · Limited investigation · Final report · Mar 14, 2000 · N2832W · Substantial damage
  > The loss of engine power for an undetermined reason, which resulted in a forced landing. A factor was the dark night light condition.
- [NTSB MIA96LA197](https://openairdocs.org/ntsb/MIA96LA197.md): Bell 47D1G · West Boca Raton, FL · Accident · No injuries · Limited investigation · Final report · Jul 30, 1996 · N1200Z · Substantial damage
  > Failure of the pilot to apply carburetor heat following a loss of engine power due to inadequate altitude over a populated area. Contributing to the accident was the encounter with conditions favorable for carburetor icing.
- [NTSB LAX86LA277](https://openairdocs.org/ntsb/LAX86LA277.md): Hiller UH-12C · Garberville, CA · Accident · No injuries · Limited investigation · Final report · Jul 2, 1986 · N26186 · Substantial damage
  > The student plt had just taken off on a training x-country flt when the main rotor tachometer needle decreased below the engine tachometer needle. He turned the helicopter to return to the arpt but was unable to maintain altitude and landed hard in rough…

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('27020')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 350))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=27020&occurrence=350

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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.