The General Electric GEnx-2B67 is a certified model within the GEnx-2B engine line for the Boeing 747-8. This high-bypass turbofan has separate high- and low-pressure rotors, with the latter driving the fan and booster compressor; full-authority digital control manages operation. EASA lists -2B67 separately from -2B67B and -2B67/P. The exact designation determines the applicable rating and operating limits.