This is a non-competitive, source-approved procurement for 12 units of a flight-critical part where the technical data is not available for open competition. Only government-approved sources for this specific item have been solicited directly. The notice states that the time required to approve a new source is typically too long to delay an award, but unapproved sources may still submit a proposal if they also submit a complete source approval request. Delivery is FOB Origin. The procurement is subject to Free Trade Agreements and the Buy American Act.