# NTSB investigations: Cessna 421A: Main gear collapsed

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 LAX85LA306](https://openairdocs.org/ntsb/LAX85LA306.md): Cessna 421A · San Diego, CA · Accident · No injuries · Limited investigation · Final report · Jul 4, 1985 · N222CF · Substantial damage
  > During landing roll out the right main gear collapsed in an outward direction. Exam of the rt gear revealed that the bolt which is associated with the upper & lower gear torque links was missing. An exam of the left gear assembly revealed that the required…
- [NTSB MKC82FA174](https://openairdocs.org/ntsb/MKC82FA174.md): Cessna 421A · Sabetha, KS · Accident · No injuries · Field investigation · Final report · Sep 24, 1982 · N2231Q · Substantial damage
  > The plt stated that the gear indicated down and locked prior to landing and during the first part of the landing roll. After about 1,000 ft of roll the plt got an unsafe indication and the left wing began to settle. After the left gear collapsed the acft…

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('2076012')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 191))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=2076012&occurrence=191

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.