Presolicitation notice from the Department of Defense, specifically the Department of the Navy, is seeking to procure NRP, CCA, BOARD, ANALO. This item falls under the category of Miscellaneous Aircraft Accessories and Components (PSC Code: 1680). The notice states that this part requires engineering source approval by the design control activity in order to maintain the quality of the part. The approved source(s) retain data rights, manufacturing/repair knowledge, or technical data that are not economically available to the Government, and the data or knowledge is essential to maintaining the quality of the part. The subject item requires Government source approval prior to contract award, as the item is flight critical and/or the technical data available has not been determined adequate to support acquisition via full and open competition. Only the source(s) previously approved by the Government for this item have been solicited. Interested parties must submit the necessary information for source approval. The proposed contract action is for supplies or services for which the Government intends to solicit and negotiate with only one source. All responsible sources may identify their interest and capability to respond to the requirement or submit proposals, quotations, or capability statements.