Presolicitation DEPT OF DEFENSE DEPT OF THE NAVY is seeking bids for the procurement of a trunnion drive and other replacement parts for aircraft. This item is typically used to support the operation and maintenance of aircraft. The procurement requires engineering source approval to ensure the quality of the part. Only approved sources have been solicited for this item. Interested parties must submit the necessary technical data and documentation 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.