The 777 has three engine options: Pratt & Whitney, General Electric, and Rolls Royce. The three engine manufacturers developed more efficient and quieter turbofans to power the 777. The most recent derivative of the General Electric's GE90 engine, the GE90-115B, is the sole powerplant for the longer-range 777-300ER and the 777-200LR. The GE90-115B certified at 115,000 lbs. of thrust and has broken a number of aviation records. The Guinness Book of World Records recognized the engine as the "World's Most Powerful Commercial Jet Engine" in 2001 after it recorded an amazing 123,000 lbs. of steady-state thrust while undergoing initial ground testing. In late 2002, the engine shattered its original record by reaching 127,900 lbs. of thrust during required certification testing.