RW-1,
Thanks for the work you have done. I will refer to your pages often!
A note for all is that this handbook is not fully correct in many areas, it is a general guide and that's all. Generally, more authoritative techniques are available through the manufacturer of your machine, or from other sources.
A simple example: In the max performance takeoff, they recommend the old constant attitude technique, which is fine if you have the power to muscle up to the almost OGE departure above the barriers. For performance limited helos, a ground cushion technique is much more effective, where you race in low IGE toward the obstacle and pop up to a climb attitude at the higher speed that permits a better climb. This technique is much like the Cat A airport procedures in most twin flight manuals. It is identical in concept to a soft field landing, where IGE power savings are used to get you toward Vy.
It would be fun to annotate the handbook with such edits, and have the pprune group make comments for a more complete undersanding of the ins and outs of helo-ing!
Anyway, thanks for doing the service, RW-1
Nick