Hello,I have a little question, when I come inot the cockpit of the 757 (so all is off... no light, nothings), the APU generator is left ON...Should I push this button to switch it off before starting the APU ?Another question : when is the checklist it is written "APU Bleed Air Switch........OFF) does that mean that this switch must be black (no vertical white line ?) ?Thank you !MarcVarlamoff

Hi Marc,The APU Generator switch should always remain on during normal operation unless you wanted to take the Generator off line for some reason (say like it was inop). The APU controller on the 757 automatically controls the generator keeping the "OFF" light extinguished unless the APU detects a problem with the generator system.In regards to the APU Bleed, you are correct, No Flow Bar in the window = switch off.RegardsPaul:-cool