# NTSB investigations: Cessna 421, CO

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 DEN05FA038](https://openairdocs.org/ntsb/DEN05FA038.md): Cessna 421 · Englewood, CO · Accident · 3 fatal · Field investigation · Final report · Dec 17, 2004 · N421FR · Destroyed
  > loss of engine power due to fuel starvation, and the instructor's failure to maintain aircraft control. Contributing factors were a partially blocked fuel line resulting in restricted fuel flow, the instructor's failure to perform critical emergency…
- [NTSB DEN03FA025](https://openairdocs.org/ntsb/DEN03FA025.md): Cessna 421 · Akron, CO · Accident · 2 fatal · Field investigation · Final report · Dec 25, 2002 · N421D · Destroyed
  > The fractured connecting rods and the pilot not maintaining aircraft control following the engine failure. Factors contributing to the accident were the low altitude, the pilot not maintaining minimum controllable airspeed following the engine failure, the…
- [NTSB DEN91LA066](https://openairdocs.org/ntsb/DEN91LA066.md): Cessna 421 · Englewood, CO · Accident · Minor injuries · Limited investigation · Final report · May 1, 1991 · N18DF · Substantial damage
  > Power loss on both engines as a result of exhaust system failure.

## 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" = 'CO' 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=CO

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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.