Rolls-Royce Corp., Indianapolis, Ind., is being awarded a $12,587,942 modification to a previously awarded firm-fixed-price contract (N00019-10-C-0020) to exercise an option for maintenance services in support of the MV-22 and CV-22 AE1107C engines, to include 14 low power repairs and 6,565 engine flight hours.  Work will be performed in Oakland, Calif. (70 percent), and Indianapolis, Ind. (30 percent), and is expected to be completed in November 2011.  Contract funds in the amount of $12,587,942 will expire at the end of the current fiscal year.  The Naval Air Systems Command, Patuxent River, Md., is the contracting activity.