The 777-300ER ("ER" for Extended Range) is the long range version of the 777-300 and contains many modifications, including GE90-115B engines, which are the world's most powerful jet engine with 115300 lbf (513 kN) thrust. Other features include raked wingtips, a new main landing gear, extra fuel tanks (2600 US gallons, 9840 L), as well as strengthened fuselage, wings, empennage, nose gear, engine struts and nacelles, and a higher MTOW,775000 lb (347450 kg) versus 660000 lb (299370 kg) for the 777-300. The maximum range is 7930 nautical miles (14685 km). The 777-300ER's extra 1935 nautical miles (3550 km) range over the 777-300 is mainly due to the increase in the maximum takeoff weight (MTOW),along with the increased capacity for 2600 gallons of additional fuel (45220 to 47890 US gal or 171000 to 181000 L). The -300ER weighs slightly more than the -300,and has engines that produce more thrust, but the -300ER can fly approximately 34% farther with a full load of passengers and cargo. After entering service, the 777-300ER demonstrated a 2% better fuel burn than expected, and further engine, wing, and weight modifications produced a 1.4% further reduction in fuel consumption. The first 777-300ER was delivered to Air France in April 2004. Since the introduction of the -300ER, all orders for the -300 series have been the ER variant. The 777-300ER's direct competing aircraft from Airbus are the A340-600HGW and the proposed A350-1000. Over the last few years the 777 ...
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