# NTSB investigations: Cessna 421C, 1992

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 SEA93FA035](https://openairdocs.org/ntsb/SEA93FA035.md): Cessna 421C · Wilsonville, OR · Accident · 2 fatal · Field investigation · Final report · Dec 13, 1992 · N98489 · Destroyed
  > The pilot-in-command's failure to maintain control of the aircraft.
- [NTSB LAX93LA051](https://openairdocs.org/ntsb/LAX93LA051.md): Cessna 421C · Santa Maria, CA · Accident · Serious injuries · Limited investigation · Final report · Nov 22, 1992 · N52AK · Destroyed
  > 1) The internal failure of the left engine, left magneto due to inadequate maintenance and non compliance with the manufacturers service bulletins and recommendations, and 2) the failure of the pilot to attain the proper touchdown point during the landing…
- [NTSB LAX92TL#09](https://openairdocs.org/ntsb/LAX92TL%2309.md): Cessna 421C · Window Rock, AZ · Accident · No injuries · Class 3 · Final report · Jun 11, 1992 · N6115C · Substantial damage
- [NTSB ATL92FA039](https://openairdocs.org/ntsb/ATL92FA039.md): Cessna 421C · Atlantic Ocean (Atlantic Ocean) · Accident · 5 fatal · Field investigation · Final report · Jan 13, 1992 · N40JK · Destroyed
  > The pilot's inadequate weather evaluation, and his continued flight into known adverse weather conditions. Factors were: the improper weather briefing by a flight service station specialist, and level iii thunderstorms.
- [NTSB LAX92FA082](https://openairdocs.org/ntsb/LAX92FA082.md): Cessna 421C · Mammoth Lakes, CA · Accident · 4 fatal · Field investigation · Final report · Jan 5, 1992 · N2654M · Destroyed
  > The failure of the pilot to plan and conduct his departure flight to avoid high mountainous terrain, during which the pilot became lost/disoriented. Contributing to the accident was self induced pressure to depart before the arrival of a snow storm.

## 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") = 1992
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2076016', '2076017'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=2076016&year=1992

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