The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is seeking to procure nine units of the Acoustic Processor, identified by NSN 7R-1680-016672139-CB and reference number 328A760-1. This procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that only approved sources may submit proposals, as the technical data available does not support full and open competition. Interested parties must provide detailed information regarding their qualifications and capabilities, adhering to the guidelines outlined in the NAVSUP Weapon Systems Support Source Approval Information Brochures, with a submission deadline of 45 days from the notice publication date. For inquiries, Michelle B. Toughill can be contacted at (215) 737-3747 or via email at MICHELLE.TOUGHILL@DLA.MIL.