# NTSB investigations, CO: 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 DEN03LA116](https://openairdocs.org/ntsb/DEN03LA116.md): Cessna T210M · Aspen, CO · Accident · No injuries · Limited investigation · Final report · Jul 2, 2003 · N761XE · Substantial damage
  > the failure of the landing gear actuator switch. Factors relating to the accident were the false landing gear indication, the precautionary landing, and the improper maintenance adjustment performed on the landing gear switch prior to the accident flight.
- [NTSB FTW97LA107](https://openairdocs.org/ntsb/FTW97LA107.md): Piper PA-32R-300 · Salida, CO · Accident · No injuries · Limited investigation · Final report · Feb 18, 1997 · N4477F · Substantial damage
  > The airplane's performance being exceeded due to the pilot's inadequate preflight planning. Factors were the uphill runway, high density altitude, and the pilot's lack of experience performing takeoffs from a high altitude airport.
- [NTSB FTW95LA279](https://openairdocs.org/ntsb/FTW95LA279.md): Bellanca 8GCBC · Wellington, CO · Accident · No injuries · Limited investigation · Final report · Jul 8, 1995 · N57669 · Substantial damage
  > Fatigue failure of the left main landing gear (spring strut), due to the improper maintenance (grinding) by unknown maintenance personnel.
- [NTSB DEN91LA054](https://openairdocs.org/ntsb/DEN91LA054.md): Beech H35 · Greeley, CO · Accident · No injuries · Limited investigation · Final report · Mar 24, 1991 · N5463D · Substantial damage
  > The pilot's inadvertent activation of the landing gear switch causing the landing gear to collapse while the aircraft was still on the landing roll.
- [NTSB DEN89LA183](https://openairdocs.org/ntsb/DEN89LA183.md): Cessna 177RG · Brighton, CO · Accident · No injuries · Limited investigation · Final report · Aug 4, 1989 · N8203G · Substantial damage
  > Failure of the landing gear down lock, which allowed the landing gear to collapse during the landing.

## 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" = 'CO' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 190)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=190&state=CO

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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.