CS 27.67 Climb:
one-engine-inoperative
ED Decision 2003/15/RM
For multi-engine helicopters, the steady rate of climb (or descent), at VY (or at the speed for minimum rate of descent), must be determined with:
(a) Maximum weight;
(b) The critical engine inoperative and the remaining engines at either –
(1) Maximum continuous power and, for helicopters for which certification for the use of 30-minute one engine inoperative (OEI) power is requested, at 30-minute OEI power; or
(2) Continuous OEI power for helicopters for which certification for the use of continuous OEI power is requested.
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