The Army is conducting market research via this sources sought to assess the feasibility of a competitive acquisition and identify sources for overhaul of the CH-47 Chinook Swashplate, Controllable, NSN 1615-01-395-0006 / P/N 145R3551-17. The proposed effort is a five-year Firm-Fixed-Price IDIQ overhaul contract for a Critical Safety Item, with estimated quantities of 10 to 168 each, including 28 each for Foreign Military Sales. Overhaul must restore unserviceable assets to like-new, airworthy condition per Government specifications and DMWR 55-1615-297, Revision 3/30/2012, Change #1. Because it is a CSI, only SRD-approved vendors are qualified; current approved sources are Overhaul Support Services LLC, Airtronics Inc., and The Boeing Company, though contractors are encouraged to pursue Source Approval Request. The applicable NAICS code is 336413 with a 1,250-employee size standard, and this announcement is for information/planning only, with a synopsis to be issued later.