This is an unrestricted solicitation for an Indefinite Quantity Contract for a bleed air duct (NSN 1560-00-780-5715) with a 5-year base period and an estimated annual quantity of 40 units. The item is source-controlled to Lockheed Martin and two other approved sources, and DLA Aviation does not possess complete technical data, meaning other interested contractors must submit a Source Approval Request. Production units will be delivered FOB Destination with Inspection and Acceptance at Origin, and export controls apply. The government intends to solicit and negotiate with a limited number of sources, but proposals received within 45 days of the synopsis publication will be considered. The estimated solicitation issue date is June 11, 2026, and the contract award may consider price, past performance, and other evaluation factors.