# NTSB investigations: Propeller hub section 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 ERA25LA236](https://openairdocs.org/ntsb/ERA25LA236.md): Sting Sport TL-2000 · Dunavant, VA · Accident · No injuries · Class 4 · Limited · Final report · Jun 20, 2025 · N878N · Substantial damage > The inflight failure of the propeller due to its exceedance of the manufacturer’s overhaul requirement. - [NTSB CEN25LA117](https://openairdocs.org/ntsb/CEN25LA117.md): Vans RV-7A · Plainview, TX · Accident · No injuries · Class 3 · Limited · Final report · Mar 10, 2025 · N923ZA · Substantial damage > The improper machining of the propeller blade bearing seat, which resulted in an inflight propeller blade fatigue failure. Contributing to the accident was the improper machining of the propeller hub and propeller blade root and machining surface quality… - [NTSB WPR18LA158](https://openairdocs.org/ntsb/WPR18LA158.md): Rhoads Autogyro MTO Sport · San Manuel, AZ · Accident · No injuries · Class 3 · Limited · Final report · May 21, 2018 · N574BR · Substantial damage > The fracture of the propeller hub due to corrosion pitting along the propeller blade root seat, which led to cracking that was propagated due to high-cycle fatigue. - [NTSB WPR17LA082](https://openairdocs.org/ntsb/WPR17LA082.md): OTT 601XL-B · The Dalles, OR · Accident · Minor injuries · Limited investigation · Final report · Mar 31, 2017 · N610TT · Substantial damage > A partial loss of engine power due to the reverse bending fatigue failure of the propeller hub bolts, which resulted from the bolts not fitting tightly into the propeller hub holes. Also causal was the pilot's decision to use improper bolts for this type of… - [NTSB ERA16LA295](https://openairdocs.org/ntsb/ERA16LA295.md): Piper PA34 · Hollywood, FL · Accident · No injuries · Limited investigation · Final report · Aug 19, 2016 · N16499 · Substantial damage > Maintenance personnel’s failure to comply with an airworthiness directive for the propeller, which resulted in a propeller hub failure due to fatigue. - [NTSB ERA14LA272](https://openairdocs.org/ntsb/ERA14LA272.md): Landrum Kelly T Vans RV6 · Suffolk, VA · Accident · Minor injuries · Limited investigation · Final report · May 31, 2014 · N6RP · Substantial damage > The pilot/builder's decision to use a lubricant that was not designed for high-speed aviation applications, which resulted in the failure of the propeller needle thrust bearing due to the loss of lubrication from overheating, a total loss of aerodynamic… - [NTSB CEN14LA118](https://openairdocs.org/ntsb/CEN14LA118.md): Grumman American Avn. AA 5B · Willow Park, TX · Accident · No injuries · Limited investigation · Final report · Jan 21, 2014 · N28578 · Substantial damage > The improper reinstallation of the propeller assembly, which resulted in the subsequent in-flight separation of the propeller. - [NTSB WPR14LA046](https://openairdocs.org/ntsb/WPR14LA046.md): Rovey Jason H RV-8 · Wickenburg, AZ · Accident · No injuries · Limited investigation · Final report · Nov 2, 2013 · N391V · Substantial damage > The fatigue failure of a propeller pitch change pin due to excessive shot peening of the pin’s surface during the manufacturing process. - [NTSB WPR12LA143](https://openairdocs.org/ntsb/WPR12LA143.md): Reich Glastar · Caldwell, ID · Accident · No injuries · Limited investigation · Final report · Mar 22, 2012 · N617G · Substantial damage > The failure of a propeller blade at the hub due to fatigue cracking. - [NTSB WPR11LA412](https://openairdocs.org/ntsb/WPR11LA412.md): Wheeler Vans RV-6A · Albany, OR · Accident · No injuries · Limited investigation · Final report · Aug 28, 2011 · N642DW · Substantial damage > The in-flight separation of a propeller blade due to fatigue. - [NTSB CEN11IA235](https://openairdocs.org/ntsb/CEN11IA235.md): Schlichtman Stol CH750 · Cassville, MO · Incident · No injuries · Incident investigation · Final report · Feb 6, 2011 · N904MS · Minor damage > The fatigue failure of the propeller hub retaining bolts due to insufficient clamping force. - [NTSB CEN09CA535](https://openairdocs.org/ntsb/CEN09CA535.md): Air Tractor AT-301 · Leland, IL · Accident · No injuries · Data collection · Final report · Aug 17, 2009 · N73102 · Substantial damage > A total loss of engine power in flight due to a loss of engine oil as a result of the separation of the propeller hub components for undetermined reasons. - [NTSB CHI08CA284](https://openairdocs.org/ntsb/CHI08CA284.md): Fleet 2 · Leroy, OH · Accident · No injuries · Data collection · Final report · Sep 17, 2008 · N764V · Substantial damage > The loss of engine power due to the propeller hub failure during a low-level maneuver. Contributing to the accident were the trees encountered during the forced landing. ## 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", '01046114')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-findings/01046114/cases --- 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.