This is a procurement for a single, flight-critical part that requires Government source approval prior to contract award. Only previously approved sources have been solicited, and the approval process for a new source is typically too lengthy to delay an award. Unapproved sources must submit a comprehensive source approval request with their proposal, as detailed in the provided NAVSUP WSS brochures. Proposals lacking the required source approval data will not be considered. The delivery terms are FOB Origin.