MTOW from helipad, engines rates.
Good morning, I would like to know where it is written, in CS 29, the power rate used (in engines with 2' and 30" rate) to establish the MTOW from helipad.
Let me explain better: in CS 29.67 "Climb: One Engine Inoperative" it says: "The critical engine inoperative and the remaining engines within approved operating limitations, except that for rotorcraft for which the use of 30-second/2- minute OEI power is requested, only the 2-minute OEI power may be used in showing compliance with this paragraph".
Is it perhaps 30" as I could guess from CS 29.62 "Rejected Take-off: Category A" where it says: "The remaining engines operating within approved limits"?
Thanks for your answers!