This is a restricted, sole-source solicitation anticipated to be awarded to Hamilton Sundstrand Maastricht for the repair and overhaul of specific propeller control units. The requirement is for a firm-fixed price purchase order. Sources must have the technical expertise and ability to obtain OEM parts and data from Hamilton Sundstrand Corporation to perform the repairs. Quotations must use F.O.B. Destination or F.O.B. Origin shipping terms; other terms like Ex Works will not be accepted.