Originally Posted by
BobbyLeeSwagger
If my airplane is hotter than a bike outside a bar in Tijuana, then I'm starting the APU. Usually it's just the fuel panel that's open anyway when it says 'Door Fueling' or whatever

X2
Joking aside, this is actually typical. They’ll leave it open with no hose attached. Look outside.
I’m thinking about coming back with a new username APUturnNburn