Brake Discs. Brake Linings. Rivets.  It's all we do, so we've gotten pretty good at it.  Explore the site and find out how your aircraft can benefit from all the long hours we've put into designing what we think you'll find is one of the best general aviation aircraft brakes in the industry.

HomeBrake FinderTechnicalHow to BuyContact UsFAA PMA Approvals

Design & Testing

Back to Technical

APS BlackSteel discs and linings have successfully completed a rigorous design and testing process in order to receive FAA-PMA certification.  The approval process often takes months or even years to complete since the FAA requires that all PMA parts meet or exceed the standards of the OEM factory part that they are replacing.  APS discs and linings are FAA approved direct replacements for Cleveland brakes under this PMA approval. 

Each disc is manufactured from a single piece, premium quality carbon steel forging. When the metal is forged it creates a directional grain flow that follows the contour of the disc which reduces the risk of cracks and catastrophic failure associated with the inferior welded design.

APS uses the highest technical standards available in its manufacturing processes, producing a disc with extremely precise tolerances.  This ensures correct run-out values which eliminate disc vibrations and ensures improved pad to disc fit for better break-in. APS brakes have been tested by demanding dynamometer testing as well as extreme flight testing.

APS has the capability to maintain extremely tight tolerances with state-of-the-art CNC lathes.  When coupled with a well-researched design and extreme testing, the result is a longer-lasting disc with higher performance and greater safety margins.  After machining, the discs are subjected to a proprietary heat treatment process that gives the discs their characteristic appearance.  The Black Steel  is not only aesthetically pleasing but it offers a high resistance to corrosion and oxidation associated with the thermal cycling experienced in the aircraft braking environment. The corrosion protection also makes the discs particularly suited for agricultural aircraft that are exposed to harsh chemicals as well as aircraft located in coastal areas and aircraft that are left outside on the ramp full time.



APS non-metallic linings are made from a patented formula which includes Kevlarô fibers.  These fibers allow for maximum gripping action while maintaining the integrity of the disc and pad surfaces  for longer wear. 






A good many of our staff at APS are pilots and we know how important it is to you to trust your braking equipment.  In a highly regulated and safety-conscious industry such as aviation, APS goes beyond FAA and industry requirements to ensure that you can brake with confidence. 

If you have any questions on technical issues and don't see the answer here, please contact a sales representative for assistance.  There is a highly knowledgeable staff waiting to help you.

Back to Technical            Order an Application CD