[1] Development of the 64,000–68,000 lbf (280–300 kN), 100 in (2.5 m)-fan version began in December 1991 for the Airbus A330, was FAA certified in August 1993, and made its first flight two months later.

[1] The Advantage 70 upgrade package for the PW4168A, which powered around one-third of the active Airbus A330 fleet, was launched at the 2006 Farnborough Airshow, increasing thrust to 70,000 lbf (311 kN), and reducing fuel burn by about 1.2% as well as overall operating costs by as much as 20%.

The 98,000 lbf (440 kN) PW4098 received FAA certification in July 1998 and was introduced on the Boeing 777-300 in September 1999 but was a few years later discontinued due to core temperature problems and fuel burn that was not appealing to airlines..[1] In 2000, over 2,000 PW4000 engines had accumulated over 40 million hours of service with 75 operators.

[1] Like other modern aircraft power plants, it has a Full Authority Digital Engine Control (FADEC), for better fuel economy and reliability.

[4] Furthermore, single-crystal alloys allows higher temperature capability and PW's Floatwall combustor liners improve durability and maintainability.