B747-400 APU Door Question
Observation...many of my colleagues after landing switch the APU switch to "ON" (positions are OFF-ON-START) as they say "it opens the APU door", then select "START" as we approach the stand.
When I flew the 747-200, I'm sure this was correct, but can anyone tell me if this is the case with the 747-400...I'm almost sure that if "ON" is selected from "OFF", nothing happens (until it is "START"ed, if you see what I mean).
Thanks in advance.