The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure three units of the AFT AIV FAN for aircraft, identified by NSN 7R-1680-015854839-P8 and reference number 4102692A. This procurement requires engineering source approval from the design control activity to ensure the quality of the part, as it is flight critical and necessitates that only approved sources are solicited for the acquisition or repair of the item. Interested vendors must submit detailed information regarding their qualifications and experience, as well as any source approval requests, within 45 days of the notice, with the primary contact for inquiries being Arianna G. Pilla at (215) 697-2198 or via email at ARIANNA.PILLA@NAVY.MIL.