This document outlines a sole source federal contract opportunity for aircraft engine cowling components. The Department of the Air Force Materiel Command Lifecycle Management Center at Tinker Air Force Base is seeking to acquire left hand fan cowlings, right hand fan cowlings, inlet nose cowlings, and left and right hand fan duct assemblies from The Boeing Corporation for overhaul and repair. The components are required for the KC-135 aircraft and will be delivered to Tinker Air Force Base. Response to the solicitation is due by May 1, 2017. Delivery of the various cowling components is expected to begin at a rate of one to four units every 75 days after receipt of order. This sole source acquisition renews an previous contract held by Boeing for similar aircraft engine cowling components.