This document outlines a sole source federal contract opportunity for aircraft engine cowling overhauls. The Department of the Air Force Materiel Command Lifecycle Management Center at Tinker Air Force Base is seeking to acquire overhauls of various cowling components for the F108 aircraft engine from The Boeing Corporation. Key details include the estimated issue date of March 31, 2017 and response date of May 1, 2017. The opportunity involves the overhaul of left hand fan cowlings, right hand fan cowlings, inlet nose cowlings, and left and right hand fan duct assemblies. Estimated quantities, national stock numbers, and required delivery timeframes are provided for each item across multiple contract periods. The work will support KC-135 aircraft and components are to be delivered to Tinker Air Force Base. Point of contact information is included for questions.