Presolicitation notice from the Department of Defense, Department of the Navy, and NAVSUP Weapon Systems Support is seeking a control assembly for repair/modification purposes. The control assembly, specifically an SI (Semi-Integrated) type, is used in aircraft gunnery fire control components. The item is flight critical and requires Government source approval prior to contract award. Only previously approved sources have been solicited. Interested parties must submit the necessary information for source approval. The delivery is FOB (Free on Board) origin, and the quantity required is 1 EA (Each).