Goldenrivett
The difference in the two failures seems to be caused by ailerons.The rolling effect caused by half elevator is same in both cases but in B+Y the ailerons are available and its control in normal law is automatic. In B+G the AC is in pitch alternate and roll direct. Elevator movements through load factor demand in alternate law are likely to cause more rolling which in absence of ailerons only with spoilers 2 and 4 becomes difficult to control. Changing to direct law early is for precise elevator control there by reducing rolling effect.
Last edited by vilas; 4th Jul 2014 at 09:04.