This is a Sources Sought notice for market research by the Air Force to identify potential sources to manufacture spares for a Power Supply Platform (NSN 6130-01-290-7512HY, P/N 8ES003417-00) for the KC-135 aircraft. The estimated requirement is 123 units, and performance would be at Tinker AFB, Oklahoma. Interested parties must register as interested vendors; no solicitation is currently available, and no funds are allocated for this research. The government is seeking all business types, including small and disadvantaged businesses, and may consider breaking the requirement out by airframe. Responses will inform the acquisition strategy, which could lead to a competitive or small business set-aside contract.