opportunity to tidy-up the design, by removing the empty air passage at compressor exit. The -80 series is divided into four distinct models. CF6-80A The CF6-80A, which has a thrust rating of 48,000 to 50,000 lb (214 to 222 kN), powered two twinjets, the Boeing 767 and Airbus A310. The GE-powered 767 entered airline service in 1982, and the GE powered A310 in early 1983. It is rated for ETOPS operations. For the CF6-80A/A1, the fan diameter remains at 86.4 in (2.19 m), with an airflow of 1435 lb/s (651 kg/s). Overall pressure ratio is 28.0, with a bypass ratio of 4.66. Static thrust is 48,000 lbf (214 kN). The basic mechanical configuration is the same as the -50 series. CF6-80C2 For the CF6-80C2-A1, the fan diameter is increased to 93 in (2.36 m), with an airflow of 1750 lb/s (790 kg/s). Overall pressure ratio is 30.4, with a bypass ratio of 5.15. Static thrust is 59,000 lb (263 kN). An extra stage is added to the LP compressor, and a 5th to the LP turbine. The CF6-80C2 is currently certified on fifteen commercial and military widebody aircraft models including the Boeing 747-400, and McDonnell Douglas MD-11. The CF6-80C2 is also certified for ETOPS-180 for the Airbus A300, Airbus A310, Boeing 767, KC-767A/J, E-767J, Kawasaki C-2, and (as the F138) the Lockheed C-5M Super Galaxy and VC-25A. F138-100 The F138-100 is a military designation of the CF6-80C2. This engine is a modification of the CF6-80C2 to produce 50,400–51,600 lbf, with Strict Noise Regulations and Green Emissions, specially and specifically designed for Lockheed Martin C-5M Super Galaxy CF6-80E1 The CF6-80E1 has the highest thrust power of CF6-80 Series family, with the fan tip diameters increased to 96.2 in (2.443m), and an overall pressure ratio of 32.6 and bypass ratio of 5.3. The variant competes with the Rolls-Royce Trent 700 and the Pratt & Whitney PW4000 to power the Airbus A330. Other variants The industrial and marine development of the CF6-80C2, the LM6000 Series, has found wide use including fast ferry and high speed cargo ship applications, as well as in power generation. The LM6000 gas turbine family provides power in the 40 to 56 MW range for utility, industrial, and oil & gas applications. Applications Airbus A300/Airbus Beluga Airbus A310/Airbus A310 MRTT/Airbus CC-150 Polaris Airbus A330/Airbus A330 MRTT/EADS/Northrop Grumman KC-45 Boeing 747/E-4/VC-25A Boeing 767/E-767/KC-767/E-10 Boeing YC-14 Kawasaki C-2 Lockheed Martin C-5M