# NTSB investigations: Cessna 421C, 2006

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 CHI07CA028](https://openairdocs.org/ntsb/CHI07CA028.md): Cessna 421C · Moline, IL · Accident · No injuries · Data collection · Final report · Nov 26, 2006 · N471BW · Substantial damage
  > The incorrect installation of the torque link scissor assembly by maintenance personnel, which resulted in the collapse of the right main landing gear during landing.
- [NTSB CHI06LA080](https://openairdocs.org/ntsb/CHI06LA080.md): Cessna 421C · Indianapolis, IN · Accident · No injuries · Limited investigation · Final report · Feb 18, 2006 · N98507 · Substantial damage
  > The main landing gear malfunctioned and failed to extend during the landing approach for an undetermined reason, which resulted in a main gear up landing.
- [NTSB SEA06FA147](https://openairdocs.org/ntsb/SEA06FA147.md): Cessna 421C · Carson, WA · Accident · 1 fatal · Field investigation · Final report · Jan 25, 2006 · N69KM · Destroyed
  > The pilot's failure to maintain aircraft control while maneuvering. Icing conditions, clouds and the pilot's continued flight into known adverse weather were factors.

## 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") = 2006
  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=2006

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