This is a sole-source procurement for 17 units of a flight-critical part where only previously government-approved sources are being solicited. The technical data for competitive acquisition is unavailable, making new source approval a lengthy process that cannot delay the award. Unapproved sources must submit a comprehensive source approval request with their proposal, using the specified NAVSUP WSS brochures. Offers lacking the required approval data will not be considered. The delivery terms are FOB Origin.