Lots of replies! For the legal matters, we are not required to follow a PC1 profile. To be honest I'm not 100% sure what that would entail, I assume it's a specific profile that gives a certain safety margin? For weight/power considerations, we maintain at least a 5% margin over OGE power during our ops. I'm with Gomer Pylot in that I don't know the details beyond that.
whoknows, I've been meaning to do that for quite a while now! I'll try to get a video and take some snips from it or something.
Crab, John is right in that our "normal" range is 97-100% Nr. It's definitely an interesting idea to have in the back pocket though, since the beep range does go up to 102.