Increasing thrust for climb?
Has anyone ever done this? This is a standard procedure at my current employer (depending on the initial T/O power setting, of course) in the 747-400 and 747 classic. I've never done this at any other place where I flew these planes. It always seemed, for instance, that if the initial T/O power setting was going to be a reduced thrust setting, it was never reduced below what the climb thrust setting would be. However, there are plenty of occasions here where we take off at a particular thrust setting, and push the power UP at climb, either on an NADP 1 or 2 departure. This seems counter-intuitive, both for noise reduction and for engine life. I've tried to look for anything Boeing published about this procedure but have come up empty, short of calling Boeing and talking to one of the engineers.
Does anyone have any insight into this? Have you done such a thing or do you do so now? Any help is apprieciated. Thanks!