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 flight-critical receiver, identified by NSN 7R-5865-017059130-P8. The procurement requires Government source approval prior to contract award, as the item is essential for operational readiness and the technical data available does not support full and open competition. Interested vendors must be previously approved sources or submit detailed documentation for source approval along with their proposals, as offers lacking the required information will not be considered. For further inquiries, interested parties can contact Sarah E. Crompton at (215) 697-5809 or via email at SARAH.CROMPTON@NAVY.MIL.