<Dd> Initial production version </Dd> <Dl> <Dt> G650ER </Dt> <Dd> Extended Range version, with maximum takeoff weight increased by 4,000 pounds (1,814 kg) and an equivalent increase in fuel capacity; capable of flying 7,500 nautical miles (8,600 mi; 13,900 km) at Mach 0.85 . Certified in October 2014 . Fuel capacity of the wet wings is increased by a modification to the fuel system, through a service bulletin is available as a $2 million retrofit for existing G650 aircraft . List price for new G650ER aircraft is $66.5 million in 2014 . </Dd> </Dl> <Dd> Extended Range version, with maximum takeoff weight increased by 4,000 pounds (1,814 kg) and an equivalent increase in fuel capacity; capable of flying 7,500 nautical miles (8,600 mi; 13,900 km) at Mach 0.85 . Certified in October 2014 . Fuel capacity of the wet wings is increased by a modification to the fuel system, through a service bulletin is available as a $2 million retrofit for existing G650 aircraft . List price for new G650ER aircraft is $66.5 million in 2014 . </Dd> <P> On April 2, 2011, the second G650 test aircraft crashed during takeoff from the Roswell International Air Center, New Mexico, killing the four Gulfstream employees on board (two pilots and two test engineers). The aircraft was conducting a takeoff - performance test during which an engine failure was simulated by reducing the right engine's thrust to idle . The G650 became airborne briefly at a high angle of attack before its right wingtip hit the runway, then slid on the ground, struck a concrete berm, and caught fire . </P>

What is the range of a gulfstream g650er
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