The PW4000 112-inch fan engine, the second derivative model in the PW4000 engine family, was the launch engine for Boeing's 777 super twinjet. Certified at 86,760 pounds thrust, the engine entered service in 1995 with United Airlines already qualified for 180-minute ETOPS (Extended-range Twin-engine Operations). It is also the first engine to operate with approval for 207-minute ETOPS. The PW4090, certified at 91,790 pounds of thrust, entered service on the Boeing 777-200ER airplane in 1997.
The engine incorporates service-proven advanced technologies to enhance operational durability and improve environmental performance. These include the industry's most advanced single-crystal superalloy materials, powdered metal disks, TALON (Technology for Advanced Low NOx) combustor technology, and an improved Full-Authority Digital Electronic Control (FADEC). Recently, durability upgrades have been incorporated into the High Pressure Turbine allowing the operators to increase time on wing which is key in lowering maintenance costs
The PW4000 112-inch fan engine retains the excellent accessibility and component modularity of other PW4000 family members to reduce maintenance time and cost. For transportability, the engine can be shipped in a 747 freighter as a complete engine. Also, the fan case is easily separated from the engine's core for split shipment without affecting the bearing compartments.
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