The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the repair or modification of a manual drive shaft, identified by NSN 7R-1680-016099070-P8. The procurement is critical as the item is flight critical, and the government requires source approval prior to contract award, limiting competition to previously approved sources only. Interested parties must submit detailed technical data and source approval information with their proposals, as offers lacking this documentation will not be considered. Proposals are due within 45 days of the notice publication, and interested vendors can contact Patrick J. Kilkenny at (215) 697-2560 or via email at PATRICK.J.KILKENNY2.CIV@US.NAVY.MIL for further information.