Sorry to bother folks with what should be a simple question -
Trying to understand the performance charts on the AS350B2, particularly the engine power check chart.
The chart has an example calculation, but the manual doesn't describe the process. Everything is pretty clear except for the top of the chart where there's a curious set of lines that reverse and end up with a different Ng than what I have to assume is the original value recorded. Eurocopter's normally good training material doesn't appear to cover this.
What I'm trying to find out is why the reversing of the lines?
