# NTSB investigations: Cessna 421B, OK

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 FTW01FA033](https://openairdocs.org/ntsb/FTW01FA033.md): Cessna 421B · Norman, OK · Accident · 2 fatal · Field investigation · Final report · Dec 10, 2000 · N52KL · Destroyed
  > the pilot's failure to follow the instrument approach procedure and his continued descent below the prescribed minimum descent altitude (MDA). Contributory factors were the pilot's physical impairment from drugs, the low ceiling, fog, and dark night light…
- [NTSB FTW91FA027](https://openairdocs.org/ntsb/FTW91FA027.md): Cessna 421B · Muskogee, OK · Accident · 6 fatal · Field investigation · Final report · Jan 6, 1991 · N421H · Destroyed
  > The pilot's failure to maintain control of the aircraft, due to spatial disorientation. Factors related to the accident were: darkness, adverse weather conditions, and the pilot's physical impairment from the chronic sinus infection.
- [NTSB FTW82FPM17](https://openairdocs.org/ntsb/FTW82FPM17.md): Cessna 421B · Afton, OK · Accident · 1 fatal · Final report · Sep 25, 1982 · N8019Q · Destroyed
  > At about 1930 CDT, the aircraft departed yukon, OK on a direct flight to alton, IL. It landed at alton at about 2200 CDT, and about 10 minutes later, it departed on a return flight to yukon. Before departing alton, the pilot stated that he would refuel at…
- [NTSB FTW81FPJ33](https://openairdocs.org/ntsb/FTW81FPJ33.md): Cessna 421B · Yukon, OK · Accident · Minor injuries · Closed · Jul 24, 1981 · N5CD · Substantial damage
- [NTSB FTW79FPM06](https://openairdocs.org/ntsb/FTW79FPM06.md): Cessna 421B · Tulsa, OK · Accident · No injuries · Closed · Jan 4, 1979 · N200WL · 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" = 'OK' 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 ('2076014'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=2076014&state=OK

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