NAVAIR in Patuxent River, Maryland, is conducting market research to identify sources capable of modifying active orders under a Basic Ordering Agreement to continue CH-53K heavy-lift helicopter technical, engineering, logistics, production, and sustainment support. Anticipated order extensions would run through 30 September 2030, with exact scope, quantities, funding, and terms to be determined. Required capabilities include engineering-change proposals and retrofits, software and avionics upgrades, training simulator/device modifications, testing, integrated logistics support, obsolescence management, repair analyses, and kit/spares procurement. Interested businesses must demonstrate current possession or authorized access to necessary technical data, or a viable plan to obtain and maintain such access. The incumbent is Sikorsky, A Lockheed Martin Company, Stratford, Connecticut; anticipated contract types are fixed-price and cost-reimbursement as applicable, and responses are voluntary market-research information rather than offers.