What is the difference between FJ44-4A and FJ44-4M?
FJ44-4M is the fully aerobatic version of FJ44-4A engine. It is a modern two–spool co–rotating turbofan engine with medium bypass ratio, mixed exhaust, and high cycle pressure ratio. Size & Weight: FJ33 is smaller/lighter for VLJ class; FJ44 targets light-jet and some midsize applications. Thrust: FJ33 ~1,000–1,900 lbf; FJ44 typically ~1,900–3,600+ lbf depending on variant. Use Cases: FJ33 for single-engine VLJs or ultra-light twins; FJ44 for aircraft like Citation CJ/M2 and other light jets.