# NTSB investigations: Aero Commander 690, WI

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 CHI90LA114](https://openairdocs.org/ntsb/CHI90LA114.md): Rockwell AC-690 · Sheboygan, WI · Accident · No injuries · Limited investigation · Final report · Apr 18, 1990 · N57175 · Substantial damage
  > Failure of the pilot to complete the landing checklist and lower the landing gear. Contributing to this accident is habit pattern interference and distraction.
- [NTSB CHI87LA200](https://openairdocs.org/ntsb/CHI87LA200.md): Aero Commander 690 · Appleton, WI · Accident · No injuries · Limited investigation · Final report · Sep 2, 1987 · N9168N · Substantial damage
  > The plt rprtd that after the acft was at cruise flt, there was a rapid loss of hydraulic pressure. He returned to the dep arpt, but was unable to get the left main gear to lock down. Subsequently, the left main gear collapsed when the acft was landed. An…

## 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."eventStateOrRegion" = 'WI' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('0141720'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=0141720&state=WI

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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.