Originally Posted by JimL
ShyTorque,
What is V1 if it is a backup profile?
Jim
It's not! V1 only applies if you are talking about a "clear area" type profile, initiated by a forward movement of the aircraft.
If, by saying a "backup" profile you are referring to a vertical profile, the pilot works to a TDP, normally defined as a RADALT height above the helipad.
BTW, Judging by the qualification in your profile, I think you must be fishing...