CYXX From , joined Dec 1969, posts, RR:
Reply 3, posted (14 years 10 months 1 week 6 days 7 hours ago) and read 1195 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.