General Electric CF6

The General Electric CF6 is a family of high-bypass turbofan engines produced by GE Aviation, now GE Aerospace, and it also carries the United States military designations F103 and F138. It grew out of the TF39 that GE built for the C-5 Galaxy: after that military engine, GE offered a higher-thrust civil version and proposed it to Eastern Airlines for the Lockheed L-1011 and the McDonnell Douglas DC-10. Lockheed went with the Rolls-Royce RB211 for the L-1011, but the DC-10 took the CF6, which entered service in 1971, and the engine was later chosen for versions of the Boeing 747, the Airbus A300, A310 and A330, the Boeing 767, the Lockheed C-5M Galaxy and the McDonnell Douglas MD-11. Its core was also adapted into the LM2500, LM5000 and LM6000 industrial and marine gas turbines, and in newer airliners it has been superseded by the GEnx.