About Us


APS is a global leader in aircraft propeller system maintenance services. Founded in 1953 with 5 employees servicing the US midwest’s general aviation community, we have grown to over 50 employees serving air carriers, OEMs, MROs, and asset manager worldwide.

At our 46,000 square foot facility in Lake Zurich, Illinois, which is located 30 miles from Chicago-O’Hare International Airport (ORD), our technical staff with over 500 years of combined aviation experience use modern technology to perform all critical maintenance processes under the same roof.

APS is an authorized service center for major propeller OEMs including: Hamilton Sundstrand, Hartzell, McCauley, Ontic, Sensenich, Woodward, and Aero Technologies.

Our major product lines truly make us a one-stop-shop for props:

  • Regional Turboprop MRO

  • General Aviation MRO

  • Parts Sales & Exchange

  • Technical Services

  • Aero Technologies Governors

APS enhances our market coverage through key partners and relationships in countries outside of the United States and maintains a close-to-the-customer approach despite the challenges posed by distance, and we are laser-focused on enabling our customers to win in and increasingly competitive marketplace!

  • Over 60 years serving customers and building partnerships in the propeller MRO space

  • Track record of efficiency improvements, on-time performance, scrap avoidance, and cost control

  • Dedicated staff of customer service representatives

  • Technical staff co-located, on call, and ready to assist

  • Market leading IT tools providing real time visibility into production status

  • Prioritized focus on being easy to do business with

APS is proud to be a current portfolio company of Iron Range Capital Partners, a Chicago-based private equity firm (www.ironrangecapital.com).