# NTSB investigations: Cessna 421C, 1994

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 LAX94LA302](https://openairdocs.org/ntsb/LAX94LA302.md): Cessna 421C · Polacca, AZ · Accident · No injuries · Limited investigation · Final report · Jul 29, 1994 · N985RA · Substantial damage
  > the pilot's attempt to make a 180-degree turn in soft sand at a speed which imposed side loading on the nose gear. Factors were the pilot's decision to continue the approach beyond the planned touchdown point, the effect of the runway surface on braking…
- [NTSB CHI94LA250](https://openairdocs.org/ntsb/CHI94LA250.md): Cessna 421C · Oshkosh, WI · Accident · No injuries · Limited investigation · Final report · Jul 29, 1994 · N819RA · Substantial damage
  > the pilot-in-command's misjudging the flare and his failure to maintain airspeed.
- [NTSB LAX94FA257](https://openairdocs.org/ntsb/LAX94FA257.md): Cessna 421C · Carlsbad, CA · Accident · 2 fatal · Field investigation · Final report · Jun 15, 1994 · N421AG · Destroyed
  > A loss of engine power for undetermined reasons. The pilot's failure to raise the flaps and maintain altitude were factors in the accident.
- [NTSB BFO94WA088](https://openairdocs.org/ntsb/BFO94WA088.md): Cessna CE-421C · Ingolstadt, Germany · Accident · No injuries · Foreign investigation · Mar 30, 1994 · N26563 · Substantial damage
- [NTSB FTW94FA082](https://openairdocs.org/ntsb/FTW94FA082.md): Cessna 421C · San Antonio, TX · Accident · 2 fatal · Field investigation · Final report · Feb 10, 1994 · N741CA · Destroyed
  > Improper servicing of the airplane with jet fuel, which resulted in preignition and/or detonation and subsequent failure of pistons in both engines. A factor related to the accident was: the lack of a restrictive mating nozzle on the refueling truck.
- [NTSB CHI94MA072](https://openairdocs.org/ntsb/CHI94MA072.md): Cessna 421C · Mccook, NE · Accident · 2 fatal · Major investigation · Final report · Jan 26, 1994 · N5468G · Destroyed
  > Improper in-flight planning/decision by the pilot, and the accumulation of airframe ice, which resulted in an inadvertent stall. Factors associated with the accident were: partial failure of both alternators, which resulted in a subsequent electrical system…
- [NTSB MIA94FA057](https://openairdocs.org/ntsb/MIA94FA057.md): Cessna 421C · Titusville, FL · Accident · 3 fatal · Field investigation · Final report · Jan 21, 1994 · N777BE · Destroyed
  > Failure of the pilot-in-command to maintain VMC resulting in the inflight loss of control. Contributing to the accident was the fatigue failure of a section of pipe adjacent to a flange which connects to the turbocharger oil outlet of the left engine assembly.

## 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") = 1994
  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=1994

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