# NTSB investigations, CO: Gear not extended

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 FTW95LA051](https://openairdocs.org/ntsb/FTW95LA051.md): Cessna P210N · Alamosa, CO · Accident · No injuries · Limited investigation · Final report · Nov 17, 1994 · N731QH · Substantial damage
  > Failure by the pilot to properly judge the touch down point. Factors were: failure of the nose landing gear to extend and rough and uneven terrain.
- [NTSB FTW94LA029](https://openairdocs.org/ntsb/FTW94LA029.md): Cessna 210 · Monte Vista, CO · Accident · No injuries · Limited investigation · Final report · Oct 22, 1993 · N9653T · Substantial damage
  > Failure by the pilot in command to follow procedures and directives to lower the landing gear prior to landing.
- [NTSB DEN92LA030](https://openairdocs.org/ntsb/DEN92LA030.md): Piper PA-30 · Monte Vista, CO · Accident · No injuries · Limited investigation · Final report · Feb 6, 1992 · N1509 · Substantial damage
  > Operation of the aircraft with known deficiencies in equipment by the pilot in command, and jammed landing gear extension mechanisms due to corrosion.
- [NTSB DEN92LA015](https://openairdocs.org/ntsb/DEN92LA015.md): Beech V35 · Erie, CO · Accident · No injuries · Limited investigation · Final report · Dec 10, 1991 · N9449S · Substantial damage
  > An inadvertent gear up landing when the pilot in command and designated examiner failed to use proper procedures. A factor was: failure of the landing gear extension/retraction motor.
- [NTSB DEN92LA012](https://openairdocs.org/ntsb/DEN92LA012.md): Piper PA-31-350 · Denver, CO · Accident · No injuries · Limited investigation · Final report · Nov 29, 1991 · N354AC · Substantial damage
  > A false unsafe landing gear indication due to a frozen down lock switch. Factors were: icing conditions and low ceilings.
- [NTSB DEN90LA148](https://openairdocs.org/ntsb/DEN90LA148.md): Piper PA24-250 · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Jun 29, 1990 · N6391P · Substantial damage
  > The failure of the pilot to extend the landing gear for landing. Contributing factors were the pilot diverting his attention from the task at hand and failure to use a checklist.
- [NTSB DEN89LA220](https://openairdocs.org/ntsb/DEN89LA220.md): Cessna 182RG · Englewood, CO · Accident · No injuries · Limited investigation · Final report · Sep 17, 1989 · N7346X · Substantial damage
  > The pilot failed to extend the landing gear. The pilot's anxiety and/or apprehension about a suspected loss of electrical power, and his attention being diverted by other traffic were contributing factors.
- [NTSB DEN89LA043](https://openairdocs.org/ntsb/DEN89LA043.md): Piper PA-24-250 · Peyton, CO · Accident · No injuries · Limited investigation · Final report · Dec 18, 1988 · N6843P · Substantial damage
  > The student plt was practicing a touch and go landing. During a turn to final, the plt heard an acft report final for a straight in. He said he became distracted and failed to extend the landing gear. The acft landed with the gear up and slid 500 feet, coming…
- [NTSB DEN88LA027](https://openairdocs.org/ntsb/DEN88LA027.md): Piper PA-24-180 · Broomfield, CO · Accident · No injuries · Limited investigation · Final report · Nov 23, 1987 · N7291P · Substantial damage
  > The private pilot was flying to build time. After an hour of flight, the plt returned to the home airport and attempted to land. Landing gear would not extend properly and manual gear extension did not help. All gear was partially extended and would not…

## 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" = 196)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=196&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.