A320 Refuelling On Batteries Only
Sometimes we get the outboard tanks half empty after refuelling, and especially after refuelling on batteries only they can be found completely empty, with the inners containing the correct total quantity requested.
The system is for sure not designed to make this happen this way, but it happens...
This puzzles us a bit.
Although I've got my personal theory to explain this, I'd like to hear from experienced people on this subject.
Thank you,