The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of Azimuth-Tilt SE and similar replacement parts, which are critical for repair and modification purposes. The requirement includes a quantity of 5 units of NSN 7R-6210-016053563-EY, with delivery terms set to FOB Origin, and emphasizes that engineering source approval is necessary to ensure the quality of the parts, as they are flight critical. Interested vendors must be approved sources or provide detailed documentation for source approval, as the government will not consider proposals that do not meet the specified requirements. For further inquiries, Patrick Horan can be contacted at (215) 697-0275 or via email at PATRICK.J.HORAN1@NAVY.MIL, with a proposal submission deadline of 45 days from the notice publication date.