# NTSB investigations: Landing gear door retract sec

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 WPR23LA154](https://openairdocs.org/ntsb/WPR23LA154.md): Cessna T337G · Upland, CA · Accident · No injuries · Class 3 · Limited · Final report · Apr 16, 2023 · N38C · Substantial damage
  > The pilot’s failure to properly flare the airplane, which resulted in a hard landing. Contributing to the accident was the pilot’s decision to fly a nonstandard traffic pattern, which resulted in an unstable approach.
- [NTSB WPR23LA157](https://openairdocs.org/ntsb/WPR23LA157.md): Beech 95 · Bremerton, WA · Accident · No injuries · Class 3 · Limited · Final report · Apr 5, 2023 · N21RS · Substantial damage
  > Failure of the down limit and down indicator switch and the warning horn switch assemblies, which prevented the landing gear from extending and at the same time providing a false indication that the landing gear was extended.
- [NTSB WPR18LA215](https://openairdocs.org/ntsb/WPR18LA215.md): Cessna T337 · Lewiston, ID · Accident · No injuries · Limited investigation · Final report · Aug 9, 2018 · N255 · Substantial damage
  > The liberation of an internal snap ring from a landing gear door actuator, which resulted in a complete loss of hydraulic fluid and a gear-up landing. Contributing to the accident was the failure of maintenance personnel to replace the snap ring during the…
- [NTSB CEN17LA033](https://openairdocs.org/ntsb/CEN17LA033.md): North American TB 25N · Dallas, TX · Accident · No injuries · Limited investigation · Final report · Oct 29, 2016 · N25YR · Substantial damage
  > The overstress failure of the landing gear connecting rod and the improper installation of the arresting cables, which allowed the landing gear door to depart in flight and impact the airplane.
- [NTSB DEN08LA159](https://openairdocs.org/ntsb/DEN08LA159.md): Cessna 172RG · St. Louis, MO · Accident · No injuries · Limited investigation · Final report · Sep 19, 2008 · N6416V · Substantial damage
  > The improper maintenance performed resulting in a jammed nose landing gear door preventing the extension of the nose landing gear.

## 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01023231'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01023231/cases

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