§ 27.67 - Climb: one engine inoperative.

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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.