The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is seeking proposals for the procurement of 32 units of a flight-critical device identified by NSN 7R-7021-017148350-BL. The procurement requires Government source approval prior to contract award, as the technical data available has not been deemed adequate for full and open competition, necessitating that only previously approved sources be solicited. Interested vendors must provide detailed information regarding their capability to produce the item, including any prior submissions for source approval, as offers lacking the required documentation will not be considered. Proposals must be submitted within 45 days of this notice, and interested parties can contact Michael W. Bauder at (215) 737-5103 or via email at MICHAEL.BAUDER@DLA.MIL for further details.