amperage check
hello 37575,
to give you a concrete hands on experience: a long time ago, when performing an approach to linate airport(italy) in a b737 classic, suddenly, without any reason, the autopilot disengaged & neither autopilot, A or B could be re-engaged. we had absolutely no clue whatsoever to what was the cause of this problem, no amber lights, no master caution, nothing, until i glanced at the overhead panel to check the generators output & there the answer unfolded : generator n°1 cycles showed only 200hz instead of the normal 400(+/-)10hz & was still connected to its generator bus. so we started the apu & connected the apu generator to the generator bus nr.1. from then on the autopilot could again be engaged & performed flawlessly. just to say, if you "flick" a switch, make the effort to see the result, even if it takes a few seconds.
kind regards,
bm