Airline operator-customers manage aircraft maintenance data for fleets of commercial aircraft using a suite of electronic maintenance tools that are delivered to the customers over the Internet and viewed with a web browser. The functionally graded alloy is produced by forming the copper-based alloy, maintaining it at a temperature of at least 500\xb0 C. Then, a photomask comprising a plurality of second stripe patterns corresponding to the first stripe patterns is provided, and each of the second stripe patterns has a second width and a second length. A front wing is connected to a wing frame to form an airfoil for directing air through the turbine.