I'm probably going to look stupid for this, (no change there, then!) but...
What were you doing in the flight deck, since you must have been there to notice the pack situation? The only people who should be on a flight deck are operating crew members: If you were operating, how come you don't already know the answer, or couldn't ask?
Apologies if I'm missing the obvious here after getting back from a night PMI -I've tried applying gin to my logic, but it hasn't helped as much as I'd hoped!