# NTSB investigations, 2001: 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 SEA02LA003](https://openairdocs.org/ntsb/SEA02LA003.md): Ellsberg One Design · Bend, OR · Accident · Minor injuries · Limited investigation · Final report · Oct 6, 2001 · N55TE · Substantial damage
  > the separation of a propeller counterweight mounting bracket due to incorrect mounting bolt torque. Factors include significant powerplant vibration during the forced landing, no suitable landing area, and soft terrain next to the narrow road on which the…
- [NTSB NYC01LA221](https://openairdocs.org/ntsb/NYC01LA221.md): de Havilland DHC-94 Moth Minor · Farmington, PA · Accident · No injuries · Limited investigation · Final report · Sep 2, 2001 · N9403 · Substantial damage
  > The in-flight separation of a propeller blade, which resulted in a forced landing to unsuitable terrain. A factor related to the accident was the plowed field.
- [NTSB CHI01IA246](https://openairdocs.org/ntsb/CHI01IA246.md): Air Tractor AT-401 · Kenesaw, NE · Incident · No injuries · Incident investigation · Final report · Jul 27, 2001 · N4553K · Minor damage
  > The propeller blade fatigue leading to its tip separating during an aerial application. Factors were no suitable terrain for an emergency landing, high vegetation, and soft terrain encountered during the emergency landing.
- [NTSB CHI01LA222](https://openairdocs.org/ntsb/CHI01LA222.md): Druine Turbulent D-31 · Lebanon, IN · Accident · Minor injuries · Limited investigation · Final report · Jul 16, 2001 · N4697T · Substantial damage
  > The pilot not maintaining aircraft control while maneuvering during initial climb. Factors to the accident were the improperly serviced propeller that resulted in a pitch setting that was insufficient for normal flight.
- [NTSB DEN01LA085](https://openairdocs.org/ntsb/DEN01LA085.md): Boyd Young Kolb Mark III · Brigham City, UT · Accident · Minor injuries · Limited investigation · Final report · Apr 11, 2001 · N1225Y · Substantial damage
  > the pilot's misjudged landing flare, which resulted in a hard landing. A factor was the propeller tip separation due to foreign object damage.

## 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 year(c."eventDate") = 2001
  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&year=2001

---
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.