Originally Posted by
Seatownflyer
Auto/Norm is my friend. Although sometimes we just switch to the apu during taxi and get better results. Unfortunately a fancy new paint job doesn't quite do a good job of distracting you from the fact that the packs suuuuck.
Since my company insisted on operating the AC on the ground with packs low/bleeds low (norm?). I used to reach over to switch the left bleed to auto and the xbleed open. That way we got nice cooling on the gnd. The APU was good but too often you get the exhaust smell.