I am having some N1 issues, When taking off I am only getting 82% N1 when i press TOGA. I tried manually adjusting to 91% on the N1 gauge, no joy. Does the same thing when using the FMC, only gives 82-83% when FMC says we should be at 90 to 91. So my question is, Is the N1 control logic implemented to where if say i'm in N1 hold, I can manually what N1 I want the autothrottle to maintain? Also when FMC is controlling autothrottle via VNAV, why doe sthe commanded N1 cursor not move?
Thanks
Rob