Our Companies

Keystone Turbine Services

PAG Engine Services

Keystone Turbine Services, a Precision Aviation Group (PAG) Company, is a full-service gas turbine engine maintenance, repair, and overhaul (MRO) facility located in Coatesville, Pennsylvania, USA. Keystone is a factory-authorized Rolls-Royce M250 & RR 300 Authorized Maintenance, Repair and Overhaul Center (AMROC) and Honeywell Authorized Warranty & Repair Station (AWARS) for M250/RR 300 and Pratt & Whitney Canada (P&WC) for PT6A and PT6T related accessories, as well as limited Safran, Arriel and Pratt & Whitney gas turbine engine products.

PAG provides MRO and Supply Chain Solutions for Fixed- and Rotary-wing aircraft. PAG has MRO and manufacturing capabilities in four MRO segments – Avionics, Components, Engines and Manufacturing/DER Services. PAG is dedicated to keeping mission critical, business, military, and defense operators in the air.


Two All Digital, Full Data Capture, Correlated & Certified Test Cell for all M250 & RR300 Series Engines and Modules, including Turboprop Applications

Global Field Service Support & On-Site Training

Full Complement of Rental and Exchange Engines, Modules and Accessories

Engine Maintenance, Repair, Overhaul (MRO)

Award-Winning Rolls-Royce Certificated Authorized Maintenance, Repair & Overhaul Center (AMROC) for all M250® & RR 300 Series Engines, Modules, Accessories and Components

Safran Arriel 1 & 2 Series Level I & II Capability

For all of our companies and locations

Additional Capabilities

Two All Digital, Full Data Capture, Correlated & Certified Test Cell for all M250 & RR300 Series Engines and Modules including Turboprop Applications

Machine Shop Capabilities Including:

  • Specialized Welding & Heat Treat
  • Machining, CNC Lathe, Boring, Grinding
  • Paint & Corrosion Control
  • Plasma Thermal Spray (Wire & Powder)
  • Turbine Nozzle Flow Check & Adjust
  • Static & Dynamic Balance of Rotating Components
  • Repair Process Development

Global Field Service Support & On-Site Training

Certified Level 2 & 3 Non-Destructive Test

Rolls-Royce M250 & RR300 TotalCare®

Local Contact Information


885 Fox Chase, Suite 111,

Coatesville, Pennsylvania, USA 19320


+1 (610) 268-6200



Shipping & Receiving address

Keystone Turbine Services LLC
885 Fox Chase, Suite 111
Coatesville, Pennsylvania, USA 19320
Office: +1 (610) 268-6200 ext. 3602
Email: shipping@kts-aero.com

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