https://www.airresearch.com/features/stcsearch.php/holders/71572
The Aviation DataBase: STC Holder Details: TRW Hartzell Propeller
List of FAA Supplemental Type Certificates (STCs) issued to TRW Hartzell Propeller. Includes STC holder info, STC details, related Make/Models, and related...
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https://hartzellprop.com/
Hartzell Propeller Inc. | Aircraft and Airplane Propeller Systems
Aug 13, 2026 - Hartzell Propeller Inc. is the global leader in advanced aircraft and airplane propeller design and aircraft and airplane propeller manufacturing technology
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https://hartzellservicecenter.com/about/faq/
FAQ - Hartzell Propeller Service Center
Oct 19, 2024 - The Hartzell Service Center has collected some of our most frequently asked questions and answered them here.
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https://hartzellprop.com/about/
About | Hartzell Propeller Inc.
Dec 29, 2025 - With a history dating back to the Wright Brothers, Hartzell Propeller is the global leader in advanced aircraft propeller design and manufacturing.
hartzell propellerinc