Its four Pratt & Whitney JT9D-7R4W or Rolls-Royce RB211-524C2 turbofan engines gave it the 747SP a cruising speed of Mach 0.88, but it could fly as fast as Mach 0.92 with 46,500 pounds of force.

Flying a Boeing 747SP, the US legacy carrier flew around the world in the fastest time ever, raising thousands of dollars for charity in the process. The flight showcased the long-haul credentials ...