The Air Force is conducting market research to identify potential sources for the spares procurement of a servocylinder (NSN 1650-00-313-5013, P/N 3151-015) for the F-15 platform. This is a Sources Sought notice only, with no solicitation available and no contract award intended from this effort. Interested parties must register as interested vendors to be considered participants in this market research. The estimated spares requirement is 31 units, with a possible range of 8 to 47. Performance would be at Tinker AFB, Oklahoma.