The Department of Defense, through the Defense Logistics Agency, is seeking potential vendors for the procurement of the F-16 Hydraulic Drive Unit, identified by National Stock Number 1650 01 564 1844 and Part Number 16M002-817. This Sources Sought Synopsis aims to conduct market research to assess the interest of small businesses and identify qualified contractors capable of manufacturing, inspecting, and planning logistics for the hydraulic drive unit, which is critical for aircraft operations. The manufacturing location is specified as Tinker Air Force Base in Oklahoma, and interested parties are encouraged to submit a Source Approval Request (SAR) for qualification. For further inquiries, potential vendors can contact 423 SCMS at 423.SCMS.AFMC.RFI@us.af.mil, as there is currently no immediate solicitation available.