General Electric will modify a Boeing 747-400 into a new flying testbed as part of a plan to upgrade its test facilities in preparation for Leap-X and other next generation engines. The ex-Japan Airlines aircraft, acquired in December 2010, will be extensively modernized and refurbished under a $60 million plan announced by GE on Feb. 24. The 747-400, powered by GE CF6-80C2 engines, will replace the current Boeing 747-100 flying testbed. The former Pan Am 747-100 is the oldest version of ...


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