Civil jet engines: CFM, Pratt & Whitney, Rolls-Royce

Civil aircraft engines come from a handful of makers: CFM International, an equal joint venture of GE Aerospace and Safran, Pratt & Whitney (RTX) and Rolls-Royce. CFM dominates the best-selling single-aisle segment with over 60% of the market thanks to the LEAP, chosen on about 75% of A320neo orders in 2024 and the sole engine offered on the Boeing 737 MAX. The lock is twofold: very few players can design a certifiable civil engine, and certifying a new one takes billions and a decade of testing, a barrier no entrant has cleared in decades. Market shares are estimates (trade press) ; the ≈45,000 civil-engine installed base is confirmed by GE Aerospace (January 2025).