The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 104 units of aircraft landing gear, identified by NSN 1R-1730-005402343-SX. This solicitation is a presolicitation notice, indicating that the item is flight critical and requires Government source approval prior to contract award, as the technical data available has not been deemed adequate for full and open competition. Interested vendors must provide comprehensive documentation as outlined in the NAVSUP WSS Source Approval Information Brochures, and failure to submit the required data will result in disqualification from the award process. For further inquiries, interested parties can contact Bridget M. Murphy at (215) 697-5047 or via email at BRIDGET.M.MURPHY6.CIV@US.NAVY.MIL.