# NTSB investigations: Lycoming VO-435 series, 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 NYC98LA023](https://openairdocs.org/ntsb/NYC98LA023.md): Hiller UH-12D · Farmingdale, NJ · Accident · No injuries · Limited investigation · Final report · Oct 24, 1997 · N62316 · Substantial damage
  > The certificated flight instructor's inadequate supervision and failure to maintain directional control.
- [NTSB LAX98LA001](https://openairdocs.org/ntsb/LAX98LA001.md): Bell 47G-2 · Burbank, CA · Accident · No injuries · Limited investigation · Final report · Oct 3, 1997 · N2483B · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB CHI97LA306](https://openairdocs.org/ntsb/CHI97LA306.md): Bell 47 · Pipestone, MN · Accident · Serious injuries · Limited investigation · Final report · Sep 30, 1997 · N9005T · Substantial damage
  > the fracture of the pitch control rod assembly.
- [NTSB FTW97LA264](https://openairdocs.org/ntsb/FTW97LA264.md): Bell 47G-3B-1 · Crossett, AR · Accident · Serious injuries · Limited investigation · Final report · Jul 13, 1997 · N83701 · Substantial damage
  > failure of maintenance personnel to perform an adequate inspection of the fuselage center frame and detect a fatigue fracture of a longeron tube on the upper left side of the center frame, which resulted in a disconnect of the tail rotor drive shaft from 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") = 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 ('41525'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41525&year=1997

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