The first General Electric GEnx engines on a Boeing (NYSE: BA) 787 Dreamliner came to life Monday with initial engine starts. Customers can choose between the GEnx engines and the Rolls-Royce Trent 1000 engines to power their 787s.

"This is another exciting step in our progress on the 787 test program," said Scott Fancher, vice president and general manager of the 787 Program, Boeing Commercial Airplanes. "Our partners at GE have worked diligently to ensure their engines are ready for the testing that is going to occur both before first flight of ZA005 and throughout the flight test program."

Video of the engine run is available at www.boeing.com.

Following engine testing, ZA005, the fifth 787 to be built, will undergo a series of ground tests similar to those conducted on the first 787s to ensure that it is ready for first flight later this quarter.