The Department of Defense, through the Naval Air Warfare Center Aircraft Division, intends to negotiate a sole source contract with Rolls-Royce Corp for the Component Improvement Program (CIP) related to the T56 Series IV engine. The procurement aims to enhance the safety, reliability, and maintainability of U.S. Navy and Marine Corps aviation propulsion systems, involving ongoing research, development, and engineering initiatives categorized as Engineering Project Descriptions (EPDs). This work is critical for addressing operational deficiencies and ensuring the continuous improvement of military aviation capabilities. Interested parties may submit their interest and capability information by 5:00 PM Eastern Time on October 10, 2024, to Lyle Kralle at lyle.a.kralle.civ@us.navy.mil.