Raytheon Technologies Corp., East Hartford, Connecticut, has been awarded an estimated $9,287,830 modification (P00001) to a delivery order (SPRTA1-21-F-0344) issued against a five-year subsumable contract (SPE4AX-20-D-R001) with no option periods for the manufacture of TF-33 combustion chambers. This is a firm-fixed-price contract. The performance completion date is Feb. 28, 2027. Using military service is Air Force. Type of appropriation is fiscal 2021 defense working capital funds. The contracting activity is the Defense Logistics Agency Aviation, Tinker Air Force Base, Oklahoma.