The accessories drive train is a module of critical importance in modern aircraft engines. This component has the function to transfer mechanical power from the engine shaft, through an especially prepared train of gears, to a number of aircraft and engine accessories, such as the starter, the hydraulic pumps and fuel, the electrical generators and so on. Avio is world class leader in making these products for both civilian and military applications, and provides these modules to all major OEMs. In the field of  "big" commercial turbofan engines (thrust> 60,000 lbs), Avio holds the largest market share worldwide.