Keystone Turbine Services
an M International Company
885 Fox Chase, Suite 111, Coatesville, PA 19320
Phone: +1 (610) 268-6200 • Fax: +1 (484) 786-8680

Our Partners


M International Inc, formed in 1979, is a leading solutions provider of aftermarket supply-chain management services for the aerospace and defense industry.

Airborne Engines provides Repair & Overhaul services for the Honeywell T-53 series and Rolls-Royce 250 series engines.

Mint Turbines, formed in 1981, is a Honeywell Authorized Service Center that provides Maintenance, Repair & Overhaul services and worldwide Field Service Support for the T-53 series engines. Additionally, Mint Turbines has over 35 years of experience providing MRO and Field Service support on Pratt & Whitney PT6A and PT6T series engines.

Southwest Fuel Systems, established in March 2008, Goodrich Pumps and Engine Control Approved Service Center. OEM Approved T53 Fuel Control/Governors/Overhaul facility.