The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is seeking qualified sources for the procurement of 12 units of the Controller, Turret, A (NSN 7R-1270-015238131-ZR, REF NR 10055481). This procurement requires engineering source approval due to the flight-critical nature of the item, necessitating that only previously approved sources may submit proposals, as the technical data available does not support full and open competition. The selected source will be responsible for ensuring the quality of the part, which is essential for aircraft gunnery fire control components. Interested parties must contact Gregory T. Koch at (215) 737-4377 or via email at GREGORY.KOCH@DLA.MIL for further details, and must provide all required documentation for source approval with their proposals to be considered for award.