Thanks for all the great replies. I would say the consensus is that we pull an extra 1.5 over the limit on full carb heat. I have emailed Robinson for clarification.
My only other thought is the MAP limits were not just about engine performance limit, they also take in to account the air density to affect the amount of pitch you can safely pull (how much up collective) as that would affect
drag (so rotor RPM) especially if there was an engine failure --> If you were pulling so much pitch and had an engine failure, you might never be fast enough to lower the pitch before a critical (80% + 1% per 1,000) rotor RPM was reached.
I would say it is a shame they don't release a draft to forums like this to deal with any ambiguity before publication...
I'll post the reply from Robinson when I get it. In the meantime, I'll hope the temp & dewpoint spread stay out of carb heat range so I don't have to consider if the extra 1.5 is the right thing to do...
