By David Dundas Company History – Inventory Locator Service The origins of Inventory Locator Service LLC (ILS) date back to 1979 in Memphis, Tennessee, when John Williams, founder of The Memphis Group, established a business-to-business marketplace that allowed aviation parts buyers and sellers to search inventory, connect with suppliers, and negotiate orders more efficiently. At a time when much of the aviation aftermarket still depended on phone calls, paper catalogues, and fragmented supplier relationships, ILS helped pioneer a more transparent ...