The Department of Defense, through the Defense Logistics Agency (DLA Aviation), is soliciting proposals for the procurement of Duct Assembly, Bleed for the C-5 Aircraft, identified by NSN: 1560-00-728-9480. This procurement involves an Indefinite Quantity Contract with an estimated annual requirement of 80 units over a 5-year base period, with a delivery schedule of 285 days after receipt of order. The items are critical for aircraft operations and are subject to export control and configuration control regulations. Interested vendors must submit a written proposal in response to the solicitation, which will be available on or about December 8, 2025, via the DLA Internet Bid Board System (DIBBS). For further inquiries, potential offerors can contact Renee Griffin at renee.griffin@dla.mil or by phone at (445) 737-2040.