The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of aircraft components, identified by NSN 7R-1680-015854808-F7, with a quantity of 12 units required. This procurement necessitates engineering source approval due to the flight-critical nature of the item, meaning that only approved sources may submit proposals, and new sources must undergo a qualification process as outlined by the Government engineering activity. Interested parties must provide comprehensive documentation as specified in the NAVSUP Source Approval Information Brochures, and proposals must be submitted within 45 days of this presolicitation notice to be considered. For further inquiries, Alyssa T. Thieu can be contacted at (215) 697-0169 or via email at ALYSSA.THIEU@NAVY.MIL.