CFM LEAP-1A — the brain muscle of the A320neo. This isn’t just an engine — it’s a high-efficiency power system built around a large-diameter fan, advanced composite blades, and a compact high-pressure core. Air is sucked in, accelerated through the fan and compressors, mixed with fuel, ignited in a low-emission combustor, and expanded through powerful turbines that drive both the fan and compressors. The result? More thrust, less fuel burn, less noise, and lower emissions — while delivering smoo