This is a procurement for 7 units of a flight-critical part where only previously government-approved sources have been solicited. The government lacks the technical data to conduct a full and open competition for this item. Unapproved sources may still submit a proposal but must include a complete source approval request from the NAVSUP WSS brochure, as the standard approval timeline is too long to delay an award. Interested parties have 15 days from this notice to identify their capability to provide a commercial alternative. The delivery terms are FOB Origin.