# NTSB investigations: Lycoming TVO-435-GIA, 1997

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 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 FTW97LA319](https://openairdocs.org/ntsb/FTW97LA319.md): Bell 47G-3B-2 · Montrose, CO · Accident · No injuries · Limited investigation · Final report · Aug 19, 1997 · N2243W · Substantial damage
  > failure of the flight instructor (CFI) to properly supervise the flight and ensure that adequate rotor rpm was maintainted during the autorotation/landing. The high density altitude was a related factor.
- [NTSB IAD97LA104](https://openairdocs.org/ntsb/IAD97LA104.md): Bell 47G-3B-1 · Mt. Vernon, OH · Accident · Minor injuries · Limited investigation · Final report · Jul 26, 1997 · N35134 · Substantial damage
  > The pilot's failure to maintain rotor RPM.
- [NTSB SEA97LA168](https://openairdocs.org/ntsb/SEA97LA168.md): Bell 47G-3B · Idaho Falls, ID · Accident · Minor injuries · Limited investigation · Final report · Jul 14, 1997 · N8494E · Substantial damage
  > The pilot mismanaged his fuel supply which led to fuel exhaustion and subsequent loss of engine power. Factors contributing to the accident were the lack of adequate altitude and airspeed to successfully execute an autorotation.
- [NTSB SEA97LA158](https://openairdocs.org/ntsb/SEA97LA158.md): Bell 47G-3B-1 · Roosevelt, UT · Accident · Serious injuries · Limited investigation · Final report · Jul 5, 1997 · N8537F · Substantial damage
  > the pilot's failure to maintain directional control. Wind gusts were a factor.
- [NTSB LAX97TA213](https://openairdocs.org/ntsb/LAX97TA213.md): Bell 47G-3B-1 · Fallon, NV · Accident · No injuries · Final report · Jun 16, 1997 · N1335X · Substantial damage
  > exhaustion of the aircraft's fuel supply, due to improper planning and/or decision. A factor related to the accident was the high density altitude which made a successful autorotative landing unlikely.
- [NTSB SEA97LA112](https://openairdocs.org/ntsb/SEA97LA112.md): Bell 47G-3B · Snohomish, WA · Accident · Minor injuries · Limited investigation · Final report · May 15, 1997 · N8491E · Substantial damage
  > the pilot's encounter with of a loss of tail rotor effectiveness (LTE) situation, and his subsequent inadequate remedial action. Related factors included: wind conditions that were conducive to an unanticipated right yaw event, and the pilot's limited…

## 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") = 1997
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41526'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41526&year=1997

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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.