The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is seeking proposals for the procurement of five units of a flight-critical digital computer component, identified by NSN 7R-7021-016997062-CB and reference number 326A601-200. This procurement requires engineering source approval from the design control activity to ensure the quality and reliability of the part, as only previously approved sources will be considered for the contract. The selected supplier must demonstrate unique design capabilities and provide necessary technical data, with a focus on maintaining the integrity of the part's manufacturing and repair processes. Interested parties must contact Michael W. Bauder at (215) 737-5103 or via email at MICHAEL.BAUDER@DLA.MIL for further details, and proposals must be submitted within 45 days of this presolicitation notice.