This is a Sources Sought Announcement for market research to acquire repair services for three specific TACAN system components used on UH-60 Blackhawk helicopters. The government does not possess the technical data package for these parts. Interested parties capable of supplying the parts or repair services must submit capability information, including a completed questionnaire, by a specified due date. The announcement clarifies this is not a request for proposals and no contract will be awarded from this notice.