# NTSB investigations, 2000: 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 IAD01FA015](https://openairdocs.org/ntsb/IAD01FA015.md): Beech F90 · Lynchburg, VA · Accident · No injuries · Field investigation · Final report · Nov 24, 2000 · N94U · Destroyed
  > Improper rigging of both propeller assemblies by maintenance personnel, which resulted in the inadvertent feathering of both propellers after takeoff. Factors included a lack of rigging experience in airplane make and model by maintenance personnel, unclear…
- [NTSB SEA01LA023](https://openairdocs.org/ntsb/SEA01LA023.md): Piper PA-30 · Stevensville, MT · Accident · No injuries · Limited investigation · Final report · Nov 17, 2000 · N7062Y · Substantial damage
  > Fatigue of the right propeller blade resulting in an in-flight separation of the blade tip. A contributing factor was the improper maintenance procedure.
- [NTSB FTW01LA005](https://openairdocs.org/ntsb/FTW01LA005.md): Holt Thorpe T-18C · Imperial, TX · Accident · 2 fatal · Limited investigation · Final report · Oct 4, 2000 · N85LH · Destroyed
  > the failure of the propeller blade due to fatigue, which originated from a corrosion crack. A contributory factor was the pilot/owner's failure to ensure that the propeller was overhauled at the manufacturer's recommended interval.
- [NTSB FTW00LA242](https://openairdocs.org/ntsb/FTW00LA242.md): Mitsubishi MU-2B-35 · Corsicana, TX · Accident · No injuries · Limited investigation · Final report · Aug 24, 2000 · N770MA · Substantial damage
  > the in-flight separation of the propeller blade, which resulted from intergranular corrosion and fatigue cracking.
- [NTSB MIA00LA225](https://openairdocs.org/ntsb/MIA00LA225.md): Cessna 421A · Homewood, MS · Accident · No injuries · Limited investigation · Final report · Jul 25, 2000 · N1477D · Substantial damage
  > The inadequate installation of the right propeller by the mechanic for his failure to properly torque the eight nuts resulting in fatigue failure of the studs and separation of the right propeller during cruise flight. Findings in the investigation were 1)…
- [NTSB FTW00LA197](https://openairdocs.org/ntsb/FTW00LA197.md): Bushby Midget Mustang · Tulsa, OK · Accident · No injuries · Limited investigation · Final report · Jul 1, 2000 · N6402G · Substantial damage
  > The in-flight separation of the propeller spinner. A factor was the lack of suitable terrain for the precautionary landing.
- [NTSB DEN00IA133](https://openairdocs.org/ntsb/DEN00IA133.md): Diamond Aircraft Industries 20C-1 · Spanish Fork, UT · Incident · No injuries · Incident investigation · Final report · Jul 1, 2000 · N991CT · Minor damage
  > The company maintenance personnel's inadequate torquing procedures of the propeller attachment bolts which resulted in the fatigue failure of the propeller attachment bolts and the in-flight separation of the propeller.
- [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 SEA00LA068](https://openairdocs.org/ntsb/SEA00LA068.md): PZL-Bielsko SZD-45A Ogar · Libby, MT · Accident · No injuries · Limited investigation · Final report · Apr 8, 2000 · N54AS · Substantial damage
  > A crack in the propeller blade that developed into a complete separation of the blade.

## 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") = 2000
  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=2000

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