The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is soliciting proposals for the repair and modification of the Movable Sheave Assembly, a critical component in aircraft landing equipment. This procurement is a sole source requirement, indicating that the government does not possess sufficient data to contract with any source other than the current approved supplier, necessitating compliance with specific repair procedures and quality requirements outlined in the Statement of Work. The contractor will be responsible for ensuring that all repairs meet the necessary standards to return the assembly to a Ready for Issue condition, with all proposals remaining valid for a minimum of 120 days post-submission. Interested parties should direct inquiries to Alexis Healy at alexis.k.healy.civ@us.navy.mil or by phone at 215-697-1143.