Rockwell Collins Inc., Cedar Rapids, Iowa, has been awarded a maximum $196,636,862 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for various tactical airborne navigation systems spare parts. This was a sole-source acquisition using 10 U.S. Code 3204 (a)(1), as stated in Federal Acquisition Regulations 6.302-1. This is a five-year base contract with one five-year option period. The performance completion date is May 19, 2029. Using military service is Army. Type of appropriation is fiscal 2024 through 2029 Army working capital funds. The contracting activity is the Defense Logistics Agency Land and Maritime, Aberdeen Proving Ground, Maryland (SPRBL1-24-D-0003).