I was under the impression that even if the speedbrakes are not aremed(deploy upon main gear touchdown), the will deploy automatically anyways upon nosegear touchdown and reverse idle selected on 1 and 3(or is it 2 and 4). That is why the lever is held forward on landing with loss of hydraulic system 4, to prevent a rapid pitchup/potential tailstrike due to the rest of the spoilers that are still powered automatically extending.
Last edited by JammedStab; 25th Oct 2012 at 12:47.