The U.S. Department of Defense, specifically the Department of the Navy, is seeking to procure three units of Flight Control Main Fuel systems and requires source approval for the contract award. This is a presolicitation notice as the item is critical for aircraft functionality and safety, mandating careful selection of approved suppliers. The NAVSUP Weapon Systems Support office is managing the process, with inquiries directed to Svitlana Shvets. Offerings must be received by the deadline, including the necessary technical data for approval, or they will not be considered.