The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking to procure 16 units of a flight instrument identified by NSN 7R-6610-015238275-H1 and reference number 449-305-004-101. The procurement is subject to strict source approval requirements, as the item is flight critical and must be acquired from sources specified on a source control or selected item drawing, with no adequate technical data available for alternative sourcing. Interested vendors must provide comprehensive documentation to demonstrate their capability and experience in producing similar items, and must submit their proposals along with the required source approval information by the specified deadline. For inquiries, interested parties can contact Marisa L. Tetkowski at (215) 697-2644 or via email at MARISA.TETKOWSKI@NAVY.MIL.