For multiengine helicopters, the steady rate of climb (or descent), at V y (or at the speed for minimum rate of descent), must be determined with—
Maximum weight;
The critical engine inoperative and the remaining engines at either—
Maximum continuous power and, for helicopters for which certification for the use of 30-minute OEI power is requested, at 30-minute OEI power; or
Continuous OEI power for helicopters for which certification for the use of continuous OEI power is requested.