# NTSB investigations: Cessna 421C, AZ

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 WPR09LA029](https://openairdocs.org/ntsb/WPR09LA029.md): Cessna 421C · Mesa, AZ · Accident · No injuries · Limited investigation · Final report · Oct 30, 2008 · N421PC · Substantial damage
  > The failure of the hydraulic landing gear extension systems due to a ruptured line.
- [NTSB LAX95FA321](https://openairdocs.org/ntsb/LAX95FA321.md): Cessna 421C · Phoenix, AZ · Accident · 2 fatal · Field investigation · Final report · Sep 2, 1995 · N3911C · Destroyed
  > The pilot's failure to maintain positive aircraft control, a proper airspeed and fly a proper approach path during final approach. Contributing factors to the accident were the pilot's physiological condition, impairment as a result of using a sedating…
- [NTSB LAX95FA319](https://openairdocs.org/ntsb/LAX95FA319.md): Cessna 421C · Beaver Dam, AZ · Accident · 8 fatal · Field investigation · Final report · Sep 2, 1995 · N6234G · Destroyed
  > Failure of the pilot to maintain adequate airspeed, while maneuvering on approach, which resulted in an inadvertent stall/spin and uncontrolled collision with terrain. Factors relating to the accident were: the pilot allowed the aircraft weight and balance…
- [NTSB LAX95LA315](https://openairdocs.org/ntsb/LAX95LA315.md): Cessna 421C · Chinle, AZ · Accident · No injuries · Limited investigation · Final report · Aug 28, 1995 · N745CA · Substantial damage
  > the pilot's selection of a runway inappropriate for the tailwind condition and his resultant failure to achieve a touchdown point which would allow the aircraft to stop prior to over running the departure end. The rough condition of the dirt runway, the lack…
- [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 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 LAX87FA306](https://openairdocs.org/ntsb/LAX87FA306.md): Cessna 421C · Clifton, AZ · Accident · No injuries · Field investigation · Final report · Aug 16, 1987 · N26596 · Destroyed
  > The flt deptd ry 25 at greenlee cty arpt, Clifton, AZ on a VFR flt to phoenix, AZ. The plt & gnd witnesses rptd that shortly after lift-off, grayish/white smoke emanated from the left engine. The plt was unable to feather the prop, circled the arpt abt 2…

## 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" = 'AZ' 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 ('2076016', '2076017'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

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

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