The General Electric GE90 is a large turbofan family developed specifically for the Boeing 777. It entered service in 1995 and subsequently expanded from the original 777 engine competition into the exclusive powerplant family for later long-range 777 models. Its development therefore includes distinct original and higher-thrust generations.[1]GE Aerospace delivers 3,000th GE90 production engineGE Aerospace · geaerospace.com · Accessed 2026-09-13Open source details
Programme history
Early 777 customers could choose among three engine suppliers. In July 1999, Boeing selected the GE90 growth programme for its longer-range 777-300ER and 777-200LR. This changed the engine's position within the aircraft programme: a powerplant that had initially competed for individual orders became the basis of an exclusive installation on important later variants.[1]GE Aerospace delivers 3,000th GE90 production engineGE Aerospace · geaerospace.com · Accessed 2026-09-13Open source details
GE's retrospective distinguishes the base engines from the growth engines when describing production. That distinction is useful because the GE90 name does not identify one fan, compressor or thrust rating. The later programme retained the family identity while adapting its machinery to substantially greater aircraft performance requirements.[1]GE Aerospace delivers 3,000th GE90 production engineGE Aerospace · geaerospace.com · Accessed 2026-09-13Open source details
Principal versions
The GE90-94B represents the earlier family in GE's product comparison, while the GE90-115B represents the growth generation. GE associates the former with the 777-200 and 777-300 and the latter family with the 777-200LR, 777-300ER and 777 Freighter. Individual aircraft installations and certified subvariants require more precise identification than these broad product groupings.[2]GE90 EngineGE Aerospace · geaerospace.com · Accessed 2026-09-13Open source details
Mechanical differences
GE's comparison lists a fan, three booster stages and ten high-pressure compressor stages for the -94B, compared with a fan, four booster stages and nine high-pressure stages for the -115B. Both entries have two high-pressure turbine stages and six low-pressure turbine stages. The higher-thrust version consequently reflects internal aerodynamic redesign as well as a different operating rating.[2]GE90 EngineGE Aerospace · geaerospace.com · Accessed 2026-09-13Open source details
Service development
The family continued to develop after initial certification and entry into service. GE describes changes to compressor, combustor and turbine components intended to reduce weight, improve fuel consumption and extend component durability. The history of the engine consequently includes incremental improvements to existing fleets as well as the larger step from the base design to the growth programme.[2]GE90 EngineGE Aerospace · geaerospace.com · Accessed 2026-09-13Open source details
GE's production milestone account also records individual engines reaching very high accumulated operating hours. Those examples document long service lives, but do not establish a guaranteed overhaul interval or remaining life for another engine; a particular unit's condition and maintenance history remain distinct from a fleet milestone.[1]GE Aerospace delivers 3,000th GE90 production engineGE Aerospace · geaerospace.com · Accessed 2026-09-13Open source details