Rolls-Royce Corp., Indianapolis, Ind., is being awarded a $9,512,571 modification to a previously awarded firm-fixed-price contract (N00019-10-C-0020) for the procurement of 17 CV-22 low power repairs for AE1107 turboshaft engines for the Air Force.  Work will be performed in Oakland, Calif. (70 percent), and Indianapolis, Ind. (30 percent), and is expected to be completed in February 2012.  Contract funds in the amount of $9,512,571 will expire at the end of the current fiscal year.  The Naval Air Systems Command, Patuxent River, Md., is the contracting activity.