This requirement is for a flight-critical part that requires Government source approval prior to contract award, and only previously approved sources have been solicited. The part is not being acquired as a commercial item, and interested parties must demonstrate their capability to qualify as an alternate source. New sources must submit all required technical data and qualifications in accordance with the NAVSUP WSS Source Approval Information Brochure, or their offer will not be considered. If source approval cannot be processed in time, the Government may continue with award based on fleet support needs. No budget amount, performance location, or delivery timeline is specified.