The Department of Defense, through the NAVSUP Weapon Systems Support, is seeking proposals for the procurement of two automatic server replacement parts, identified by NSN 0R-7025-017146156-RQ, which are critical for flight operations. This presolicitation notice emphasizes that government source approval is required prior to contract award, as the technical data available does not support full and open competition, and only previously approved sources will be considered. The successful bidder must provide comprehensive documentation as outlined in the NAVSUP Source Approval Information Brochures, and failure to do so will result in disqualification from the award process. Interested vendors should contact Kathryn S. Hull at (215) 697-6646 or via email at KATHRYN.HULL@NAVY.MIL for further details and to ensure compliance with submission requirements.