The Pilot of a helicopter, performing PC3 operation, approaches with a westerly direction, with the reported wind 270°/24 kt. What is the headwind component that should be taken into account for take-off performance purposes?
The helicopter approaches with a westerly direction (270°), with the reported wind of 270°/24 kt facing towards the helicopter, coming from West. Thus, the 24 kt wind is wholly headwind.
According to CAT.POL.H.105 - General:
When showing compliance with the requirements, among others, account shall be taken of the environmental conditions, concerning the wind conditions:
(A) except as provided in (C), for take-off, take-off flight path and landing requirements, accountability for wind shall be no more than 50% of any reported steady headwind component of 5 kt or more;
Since, the reported headwind component is 24 kt, then the headwind component that should be taken into account for take-off performance purposes is 12 kt.
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