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Listing updated 27 September 2026
Koss Aerospace, founded in 1975 in Mississauga, Ontario, originally as Koss Machine & Tool Company, specializes in high-quality production of aircraft components. It has built parts for McDonnell Douglas, De Havilland (now Bombardier), and The Boeing Company, earning a Gold Certified Supplier status. The company changed its name to Koss Aerospace to reflect its global presence in the aerospace and defense industry, continuing to supply critical components for Bombardier’s C-Series and Global 7000/8000 aircraft, and has installed advanced 5-axis machining centers to enhance capacity and competitiveness.