# NTSB investigations: AiResearch TPE331 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 CHI92LA038](https://openairdocs.org/ntsb/CHI92LA038.md): Swearingen SA-226T · Iowa, IA · Accident · No injuries · Limited investigation · Final report · Dec 3, 1991 · N14TP · Substantial damage
  > The pilot's failure to extend the landing gear which resulted in the propeller blades contacting the runway during the landing. A factor related to the accident was the pilot's failure to follow a checklist during the approach.
- [NTSB CHI91MA260](https://openairdocs.org/ntsb/CHI91MA260.md): British Aerospace 3201 · St Louis, MO · Accident · No injuries · Major investigation · Final report · Aug 12, 1991 · N339TE · Substantial damage
  > Failure of the pilot(s) to follow the correct emergency procedure. Factors related to this accident were: inadequate system design by the manufacturer, which allowed hydraulic line vibration, fatigue failure of the line, and loss of fluid from the normal…
- [NTSB SEA91LA191](https://openairdocs.org/ntsb/SEA91LA191.md): Grumman G-164A · Hamer, ID · Accident · No injuries · Limited investigation · Final report · Jul 24, 1991 · N6702Q · Substantial damage
  > The pilot's failure to maintain runway aligment. Factors include high vegetation, and an inadverent ground loop/swerve.

## 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 ('01514', '01517'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=01514&year=1991

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