United States, May 13 -- Sikorsky Aircraft Corp., Stratford, Connecticut, is awarded a $47,000,000 modification (P00009) to a previously awarded cost-plus-fixed-fee, firm-fixed-price, indefinite-delivery/indefinite-quantity contract (N0001923D0015). This modification increases the contract ceiling for compatibility assessments and engineering models, cost reduction analysis, software support, correction of software deficiencies and enhancements, service life extension analysis, and flight test supporting follow-on test and evaluation activities in support of sustainment efforts for the H-53 helicopter for Foreign Military Sales customers. Work will be performed in Stratford, Connecticut (97%); and various locations within the continental U....