This is a sources sought notice for the spares procurement of a new-manufacture tab trim item (NSN 1560-01-473-2529FL, P/N 527-13505-2) for the KC-135 aircraft, with an estimated maximum quantity of 30 each; it does not include a repair requirement. The Air Force is conducting market research to determine whether this effort can be competitive or set aside for small businesses, and all business types are encouraged to respond. The place of performance is Tinker AFB, Oklahoma. There is no solicitation available at this time, and interested sources must register as interested vendors to participate in this market research effort. The government will use responses to shape its acquisition strategy and may consider breaking the requirement out by airframe.