# NTSB investigations: Cessna 421, IA

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 CHI96FA146](https://openairdocs.org/ntsb/CHI96FA146.md): Cessna 421 · Bernard, IA · Accident · 3 fatal · Field investigation · Final report · Apr 29, 1996 · N341DA · Destroyed
  > the pilot's operation of the airplane with known deficiencies, subsequent loss of oil from the left engine, and the pilot's failure to maintain minimum controllable airspeed (VMC), while diverting to an alternate airport. Factors relating to the accident…
- [NTSB MKC81FA035](https://openairdocs.org/ntsb/MKC81FA035.md): Cessna 421 · Spencer, IA · Accident · No injuries · Closed · May 18, 1981 · N1600B · Substantial damage
- [NTSB MKC77FCD26](https://openairdocs.org/ntsb/MKC77FCD26.md): Cessna 421 · Cedar Rapids, IA · Accident · No injuries · Closed · Jul 1, 1977 · N4048L · Substantial damage

## 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" = 'IA' 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 ('2076010'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=2076010&state=IA

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