Good thread this.
Question, my limited knowledge of the 320: There is a seperate APU battery. Can you dispatch under MEL with APU battery/charger inop and hence APU inop? Or is the APU battery essential to the emergency electrical redundancy power requirements?
I only ask as it occurs to me that if an APU start is attempted after a dual engine failure, will it really effect the DC elecrical power available for the rest of a very short flight?
Thanks in advance.