This is a market research notice from the Defense Logistics Agency at Redstone Arsenal, Alabama, seeking to identify potential manufacturers for a specific Multi-System Test Set used as Aircraft Ground Support Equipment. The acquisition is currently limited to a small number of sources because the technical data needed for competitive bidding is unavailable. The government encourages all business types, including small businesses, to express their capability to produce this item. Interested firms must meet prequalification requirements and will be responsible for all engineering, manufacturing, and logistics costs. This notice is for planning purposes only and is not a formal solicitation or a commitment to issue one.