Bell 412 RFM, Page 62, Sections 2-8, 2-10:
2-8. Take Off
[snip]
During take off, pitch attitude must be adjusted commensurate with power application to prevent entering the AVOID area of the Height-Velocity diagram.
2-10. Descent and Landing
[snip]
Flight Path - Stay clear of AVOID area of Height-velocity diagram (refer to Section 1).
I somehow think that despite Mr Robinson's Safety Course instructors dissertation, most helicopters aren't aware of whether they're departing or arriving when it comes to the HV diagram
