The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair and modification of a power supply identified by NSN 7R-6130-017163608-RQ. The procurement involves 11 units of a flight-critical item that has demonstrated marginal performance and requires significant design changes, rendering the current configuration obsolete. Interested vendors must be approved sources and are required to submit detailed technical data and source approval information with their proposals, as the government intends to negotiate with only one source under FAR 6.302-1. Proposals must be submitted within 45 days of the notice, and interested parties can contact Charles F. Horan at (215) 697-1303 or via email at CHARLES.F.HORAN@NAVY.MIL for further details.