Spoilers as you said plus the O/B ailerons are FBW
Speedbrakes should be as well, I'd say the spoiler mixer and aileron programmer in the wheel wells have been replaced by something new leaving the I/B aileron as the only mechanical roll control and therefore can double as mechanical backup rather than a couple of spoilers like on the 777.
Artificial feel for the roll control is a simple spring and the output is reduced by locking out the O/B aileron at high speed.
I don't think there are any new FBW-"laws" or protections however the -8 will be "tweaked" to fly like a -400.
Elec failures - with 4 engine generators I doubt they'll have any problems, the -400 is no problem with spoiler or O/B aileron issues.
A RAT has been added, I believe it's due to the wind milling speed of the GEnx-2B which are considerably bigger and only have 18 fan blades which may be the cause. I think the RAT is purely for hydraulics sys 3 from memory.
Last edited by SMOC; 17th February 2010 at 12:03.