Exactly, gentlemen. Some of you are missing the point.
Once again, we are asking about the
positioning of the bleed switch to off.
For what reason this should automatically open the isolation valve?
As stated, it could even be annoying!
AT & Alex
If a bleed trips off while in icing conditions, your wings will still equally be anti(de)-iced.
Initially, if you don't touch anything, NO!
The isolation valve will remain closed.
It won't automatically open.
How do you force it to open? By turning the
pack switch OFF, not the
bleed switch.
Again, in the nonnormal situations we are talking of, we have to move the PACK SWITCH, NOT THE BLEED SWITCH, to off!