http://www.newairplane.com/787/en-US...eves787PowerOn
Everett, Washington, June 20, 2008
Boeing Achieves 787 Power On

The Boeing Company has completed the Power On sequence for the
first 787 Dreamliner, marking the completion of the next major
milestone on the path to first flight later this year.

Power On is a complex series of tasks and tests that bring
electrical power into the airplane and begin to exercise the use
of the electrical systems. The 787 is a more-electric airplane
with the pneumatic, or bleed air, system being totally replaced by
electronics.

"The team has made great progress in bringing the bold innovation
of the 787 to reality," said Pat Shanahan, vice president and
general manager of the 787 program. "There is plenty of work to
be done between now and the first flight, but with every step
forward we grow more and more confident."

The power On sequence began in early June with a series of pretest
continuity checks to verify that the wiring installed in the
airplane had been connected properly. Upon completion of those
checks, the Boeing team plugged in an external power cart and
slowly began to bring full power into each segment of the system,
beginning with the flight deck displays. From that point forward,
the pilot's controls were used to direct the addition of new
systems to the power grid.

At each step of the testing, power is allowed to flow into one
additional area and gauges are used to verify that the right level
of electrical power is reached the intended area. "We are very
methodical in ensuring the integrity of the airplane's systems,"
said Shanahan. "In completing the Power On sequence, we have
verified both that the electrical power distribution system is
installed as designed and that it functions as intended."

An inside look at the Power On testing sequence will be featured
on www.boeing.com and newairplane.com beginning Monday at 5 a.m.
PDT.