Originally Posted by
ustio
well yeah using common sense which is why I asked this question since Airbus SOP is to switch the APU bleed to off and only switch it on again for 2nd engine start. I'm just asking making sure if its safe to do. Thanks anyway
Sorry. Perhaps I was too harsh with my reply.
There’s nothing wrong with leaving the APU bleed open. If ever we require the packs off for takeoff performance, we leave the APU bleed open to supply the packs.