§27.67 Climb: one-engine-inoperative

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.