This is a Sources Sought notice for market research to identify potential suppliers for the spares procurement of a Hydraulic Motor-Generator (NSN 6115-01-121-3632HY, P/N 63038-08) used on the F-15 platform. The government is seeking interest from all business types, including small and socio-economic categories, to determine if the effort can be competitive or set aside for small businesses. Performance of services would be at Tinker AFB, Oklahoma. No solicitation is currently available, and no budget amounts are specified. Interested parties must register as interested vendors to participate in this market research.