CYXX From , joined Dec 1969, posts, RR:
Reply 3, posted (16 years 3 months 3 weeks 1 day 13 hours ago) and read 1932 times:
As with many of Boeing's plane the back up systems are Fly-by-wire. The main systems is Hydrualic and the back up system is electronic. It's saves room and $$$ doing this. the 767, 747 737NG , 757, and 777 are like this.