This is a sources sought notice for market research to identify potential sources for the spares procurement of a Transmission, Mechan Platform for the B-1 aircraft (NSN 1680-01-142-7635RK, P/N NF53300-02A). The estimated requirement is 45 units, and potential sources must be capable of new manufacture, inspection, testing, preservation/packaging, and shipping, along with possible supply chain management and nonrecurring engineering costs. The government is interested in all business types, including small, 8(a), SDVOSB, HUBZone, and WOSB firms, and may consider breaking the requirement out by airframe. Performance will be at Tinker AFB, OK 73145, and interested vendors must select the “Add Me to Interested Vendors” button to participate. No solicitation is currently available, and this notice is for market research only.