Boeing Completes First GEnx Engine Runs for Fifth 787 Dreamliner
Boeing on Monday ran the first

Boeing on Monday ran the first General Electric GEnx engines expected to power the fifth 787 Dreamliner prototype, which is scheduled to be the first to fly with the big turbofans. Rolls-Royce Trent 1000s power the first four 787 prototypes, all of which are now involved in the flight-test program.

Chosen in a three-engine selection run-off that ultimately excluded an offer from Pratt & Whitney, the GEnx-1B won FAA certification in March 2008. Scheduled to fly on ZA005 “later this quarter,” the engines offer 15-percent improved fuel efficiency and 30 percent more time “on wing” over those they replace in GE’s product line, the CF-6, according to the company.