# NTSB investigations: Lycoming TVO-435-GIA: 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 SEA03LA189](https://openairdocs.org/ntsb/SEA03LA189.md): Bell 47G-3B-1 · Diamond, OR · Accident · Serious injuries · Limited investigation · Final report · Sep 12, 2003 · N48020 · Substantial damage
  > Loss of engine power for undetermined reasons during hover.
- [NTSB IAD03LA042](https://openairdocs.org/ntsb/IAD03LA042.md): Bell BHT-47-G3B2A · Lexington, KY · Accident · No injuries · Limited investigation · Final report · Mar 27, 2003 · N47SN · Substantial damage
  > The pilot's failure to maintain directional control while maneuvering to land after a loss of engine power. A factor was the loss of engine power.
- [NTSB SEA03LA023](https://openairdocs.org/ntsb/SEA03LA023.md): Bell 47G · Idaho Falls, ID · Accident · No injuries · Limited investigation · Final report · Jan 2, 2003 · N4759R · Substantial damage
  > In-flight loss of engine power for undetermined reasons.
- [NTSB SEA98LA006](https://openairdocs.org/ntsb/SEA98LA006.md): Bell 47-G3B · Winston, MT · Accident · No injuries · Limited investigation · Final report · Oct 19, 1997 · N47AH · Substantial damage
  > Fuel starvation due to fuel flow restriction from a failed carburetor automatic mixture control device. Factors include night light conditions for the forced landing.
- [NTSB SEA94LA065](https://openairdocs.org/ntsb/SEA94LA065.md): Bell 47G-3B-1 · Gold Hill, OR · Accident · Serious injuries · Limited investigation · Final report · Feb 24, 1994 · N73909 · Destroyed
  > Separation of the crossover fuel line, and the inability of the pilot in command to maintain a proper rate of descent during the autorotation.
- [NTSB SEA90LA048](https://openairdocs.org/ntsb/SEA90LA048.md): Bell BH-47G3B2 · Des Moines, WA · Accident · Minor injuries · Limited investigation · Final report · Mar 1, 1990 · N4073G · Destroyed
  > Partial loss of engine power, cause undetermined. The aircraft was not recovered and examination of the engine was not possible.
- [NTSB LAX83FA366](https://openairdocs.org/ntsb/LAX83FA366.md): Bell 47G-3B-1 · S. Lake Tahoe, CA · Accident · Serious injuries · Field investigation · Final report · Jul 31, 1983 · N11102 · Destroyed
  > During takeoff over descending terrain in a mountainous area, the RPM began decaying when the helicopter had accelerated to 40 KTS & was about 75 ft AGL. The plt applied more throttle & increased the collective, then noted that the manifold pressure was…

## 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 ('41526')
    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=41526&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.