This is a sources sought notice for market research on a potential five-year, firm-fixed-price IDIQ contract for the overhaul of CH-47 Control Assembly, Quadrant Input/Output units. The estimated quantity is between 9 and 54 units, which includes 9 units for Foreign Military Sales. The overhaul work must fully restore the assets to an air-worthy condition according to a specific government specification. Interested parties with the capability must respond by the specified deadline, identifying their business size and socio-economic status.