# NTSB investigations: Continental R670-SERIES series, 1991

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 SEA91LA166](https://openairdocs.org/ntsb/SEA91LA166.md): Waco UBF · Lincoln City, OR · Accident · No injuries · Limited investigation · Final report · Aug 11, 1991 · N13075 · Substantial damage
  > Improper planning/decision by the pilot, and his delay in aborting the takeoff. The tailwind & proximity of trees/brush were related factors.
- [NTSB LAX91LA256](https://openairdocs.org/ntsb/LAX91LA256.md): Weaver WACO-ASO · Montague, CA · Accident · No injuries · Limited investigation · Final report · Jun 9, 1991 · N4W · Substantial damage
  > Failure of the pilot to maintain directional control of the airplane and improper use of the brakes.
- [NTSB LAX91LA102](https://openairdocs.org/ntsb/LAX91LA102.md): Curtiss-Wright E-4000 · Watsonville, CA · Accident · No injuries · Limited investigation · Final report · Feb 17, 1991 · N9048 · Substantial damage
  > The inadequate design and length of the tailwheel assembly cable.
- [NTSB LAX91LA087](https://openairdocs.org/ntsb/LAX91LA087.md): Waco UIC · Santa Paula, CA · Accident · No injuries · Limited investigation · Final report · Feb 3, 1991 · N13408 · Substantial damage
  > The brittle fracture of the left brake master cylinder tread end causing loss of directional control.

## 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") = 1991
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('17016'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=17016&year=1991

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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.