For a future update: A request for EXT power logic to be tied to weight on wheels instead of parking brake
In real world ops there are number of reasons why the parking brake would be off when at the gate, one of which is hot brakes after landing. I released the parking brake, the aircraft went straight to batts and disconnected EXT.
How do you have working brake temp in the A350? I tried a RTO and the temperature doesn’t rise.