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Date: January 12, 2005 Category: Press Releases
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Hartzell will now be able to more quickly obtain STCs for its OEM and Top Prop™ retrofit customers.


PIQUA, Ohio – January 12, 2005 – Hartzell Propeller Inc. announced today that the FAA has given the company special status as a Designated Alteration Station (DAS). This will allow the company to issue its own Supplemental Type Certificates (STCs) for propeller installations on Part 23 airplanes including single and multi-engine piston and turbine-engined aircraft. It also includes the authority to install related components such as propeller de-ice and anti-ice systems, propeller governors, synchronizing and synchrophasing systems, and spinners.  DAS authority will allow Hartzell to obtain STC approvals faster for OEM aircraft as well as for the Hartzell Top Prop™ retrofit program, providing a future benefit to many general aviation aircraft owners and operators.


Hartzell Propeller currently holds more than 50 STCs and this extensive experience was a key factor in being granted DAS authority. The company is believed to be the first propeller manufacturer in the world to receive this authority.


The new DAS authority extends throughout the entire certification process from initial conception, design and flight testing through preparation and approval of STC installation instructions, flight manual supplements, maintenance manual supplements and final issuance of the STC.


“We are very pleased that the FAA has granted us DAS authority, and we believe this reflects well on the experience, competence and integrity of our organization and associates. It will allow us to complete STC projects more expeditiously and will free up FAA resources, thereby benefiting both organizations. We are planning a number of new STC projects for the near future using our new DAS capability” said Brian Meyer, Manager, Aircraft Applications Engineering and DAS administrator for Hartzell Propeller Inc.


“Hartzell has effectively used the STC process to provide improved propeller systems to OEM customers, such as Diamond, Mooney, Raytheon and SOCATA, as well as for existing aircraft through our Top Prop™ Performance Conversion program.  We believe that DAS authority will further enhance our ability to provide innovative new products for the general aviation market,” said Mike Disbrow, Senior Vice President, Marketing & Customers Services at Hartzell Propeller.


Hartzell Propeller Inc. is widely recognized as the leader in advanced propeller design and manufacturing technology. NASA has recognized Hartzell’s advanced design capability by naming it the exclusive propeller partner for its General Aviation Propulsion (GAP) program. The company has recently developed the next generation of propeller designs based upon innovative “blended airfoil” technology and is manufacturing these blades on revolutionary machining centers to provide mission optimized performance for its customers. Hartzell traces its beginnings in 1917 to a relationship with Orville Wright and was founded on the principal of Built on Honor – a tradition that continues today.  For more information visit the company on the Web at

Hartzell Propeller