However, Richard Aboulafia of the Teal Group, an aviation consultancy, thinks there is more technological risk with the Leap-X than with the GTF and greater uncertainty about whether it will deliver the same cost savings.
Government support, the state of the world aviation industry, the price of oil, customer support, World Trade Organization rulings, the speed of technological progress in composite materials, the reaction of industry behemoths Boeing and Airbus are all known unknowables which cause considerable uncertainty to the board of Bombardier.