Rolls-Royce Corp., Indianapolis, Ind., is being awarded an $11,922,876 modification to a previously awarded firm-fixed-price contract (N00019-10-C-0020) to exercise an option for maintenance services in support of the V-22 AE1107C engine low power repairs, turboshaft engine and site support.  Work will be performed in Oakland, Calif. (70 percent) and Indianapolis, Ind. (30 percent), and is expected to be completed in February 2013.  Contract funds in the amount of $11,922,876 will expire at the end of the current fiscal year.  The Naval Air Systems Command, Patuxent River, Md., is the contracting activity.