The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is soliciting proposals for a sole source contract for the procurement of single disk brakes (NSN 1630) used in aircraft wheel and brake systems. The requirement emphasizes that the Government does not possess sufficient data to contract with sources other than the current approved supplier, necessitating Government Source Approval prior to award. These brakes are critical components for aircraft safety and operational efficiency. Interested vendors must submit the necessary documentation as outlined in the NAVSUP WSS Source Approval Brochure, available online, and direct any inquiries to Casey Brown at casey.m.brown20.civ@us.navy.mil or by phone at 215-697-3752.