Rolls-Royce Corp., Indianapolis, Ind., is being awarded a $6,944,520 modification to a previously awarded firm-fixed-price contract (N00019-10-C-0020) to provide for 10 low power repairs of the AE1107 turboshaft engines for the Air Force variant of the CV-22 aircraft for the U.S. Air Force.  Work will be performed in Oakland, Calif. (70 percent) and Indianapolis, Ind. (30 percent), and is expected to be completed in February 2014.  Fiscal 2013 Operations and Maintenance, Air Forcefunds in the amount of $6,944,520 will be obligated at time of award, all of which will expire at the end of the current fiscal year.  The Naval Air Systems Command, Patuxent River, Md., is the contracting activity.