Thx
Thanks everyone.
I always love to come on here to get different opinions and answers.
And just to clarify, the question was about being at the gate without the external air connected. Our manuals also state that in that case to leave the pack switches in OFF.
The whole thing seems to be "technique" being tought in the training center.
They still fly it like a 200. And we all can thank them for the overhead panel.
New everyone should know where that is......