The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure three units of the Control Unit, APU, under a sole source contract with AAR Supply Chain, Inc. The procurement involves National Stock Number (NSN) 7R-2995-014963686-VH and part number 4504587, with delivery terms set to FOB Origin. These control units are critical components for aircraft operations, and the government has determined that only AAR Supply Chain, Inc. can fulfill this requirement due to the lack of available drawings or data for alternative sources. Interested parties are encouraged to submit capability statements or proposals within 45 days of this notice, and all inquiries should be directed to Kate N. Schalck at the provided email address, kate.n.schalck.civ@us.navy.mil.