The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair or modification of an Instrument Landing System, identified by NSN 7R-1680-016913816-P8. This procurement involves a quantity of one unit, which is classified as a commercial/nondevelopmental/off-the-shelf item, and requires government source approval prior to contract award due to its flight-critical nature. Interested vendors must provide necessary documentation for source approval along with their proposals, as offers lacking this information will not be considered. For further inquiries, interested parties can contact Sara M. Hojnowski at (215) 697-2198 or via email at sara.hojnowski@navy.mil.