It will load monitor it's own electrical load to maintain air output for the engine start as the priority.
Sorry not licensed on NG, but how does it do this. Has the NG load shedding? Do the galleys and the cabin lights go out during start?
as well as no IDG spar fuel valve indication.
and thats new to me as well. What does an IDG spar valve do?
Quite a revelation that Boeings narrow body has manual start. I thought all new airliners had auto start. A320 with both engines has always had it.
On RR engines, we always motor them down to 100degC before fuel on. The FADEC does the same.