This is a Sources Sought notice for market research to identify potential contractors capable of repairing and restoring specific F-16 Advanced Programmable Signal Processor (APSP) Line Replaceable Units and Shop Replaceable Units. The Air Force is seeking information from all small business categories to determine if the future procurement can be set aside for small businesses. Interested parties must submit a capabilities white paper and company information. Responses are due by April 17, 2026. No budget or specific performance location is detailed in this announcement.