# NTSB investigations, CO: Propeller failure/malfunction

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 DEN03LA120](https://openairdocs.org/ntsb/DEN03LA120.md): Conn Vans RV-4 · Durango, CO · Accident · Serious injuries · Limited investigation · Final report · Jul 5, 2003 · N78DR · Substantial damage
  > partial propeller blade separation for reasons undetermined, and the pilot's misjudgment of distance and altitude during the forced landing approach that resulted in his overshooting the road on intended landing and colliding with trees. A contributing factor…
- [NTSB DEN00FA092](https://openairdocs.org/ntsb/DEN00FA092.md): Swearingen SA226TC · Denver, CO · Accident · Minor injuries · Field investigation · Final report · May 19, 2000 · N235BA · Substantial damage
  > propeller blade fatigue failure due to stress corrosion.
- [NTSB FTW98FA392](https://openairdocs.org/ntsb/FTW98FA392.md): Piper PA-20-180 · Thornton, CO · Accident · Serious injuries · Field investigation · Final report · Sep 19, 1998 · N6028D · Destroyed
  > The separation of a propeller blade due to corrosion initiated fatigue, followed by the separation of several of the engine's mounts, and the subsequent inability of the pilot to control the aircraft. A contributing factor was the trees.
- [NTSB FTW96LA350](https://openairdocs.org/ntsb/FTW96LA350.md): Hardy Quickie Q-200 · Hudson, CO · Accident · Minor injuries · Limited investigation · Final report · Aug 18, 1996 · N6NH · Substantial damage
  > delamination of a propeller blade. A factor relating to the accident was: the terrain condition in the emergency landing area (soft/sandy berm and ditch).
- [NTSB FTW96FA009](https://openairdocs.org/ntsb/FTW96FA009.md): Rupe RV-4 · Longmont, CO · Accident · 1 fatal · Field investigation · Final report · Oct 7, 1995 · N61TR · Destroyed
  > the installation of an unapproved metal propeller which led to a fatigue failure of a blade and loss of aircraft control.

## 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" = 131)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=131&state=CO

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