On June 16, 2005, Onex Corporation, through Mid-Western Aircraft Systems, Inc., acquired the Wichita/Tulsa Division of Boeing Commercial Airplanes from The Boeing Company for approximately CDN$1.5 billion.  Credit arrangements were provided by a syndicate of financial institutions.
The purchased operations include Boeing's commercial airplane manufacturing facilities in Wichita, Kan., and Tulsa and McAlester, Okla.  Mid-Western becomes the largest Tier 1 aerostructures manufacturer in the world.

Onex was represented in-house by Andrea Daly, general counsel, who was assisted in Canada by Davies Ward Phillips & Vineberg LLP, with a team that included John Zinn and Ian Crosbie (tax) and Gerold Goldlist and Dale Osadchuk (corporate) in the Toronto office and Peter Glicklich and Michele Alexander (tax) in the New York office.