CS 27.610 Lightning
and static electricity protection
ED Decision 2016/024/R
(a) The rotorcraft must be protected against catastrophic effects from lightning.
(b) For metallic components, compliance with sub-paragraph (a) may be shown by:
(1) Electrically bonding the components properly to the airframe; or
(2) Designing the components so that a strike will not endanger the rotorcraft.
(c) For non-metallic components, compliance with sub-paragraph (a) may be shown by:
(1) Designing the components to minimise the effect of a strike; or
(2) Incorporating acceptable means of diverting the resulting electrical current so as not to endanger the rotorcraft.
(d) The electrical bonding and protection against lightning and static electricity must:
(1) Minimise the accumulation of electrostatic charge;
(2) Minimise the risk of electric shock to crew, passengers, and service and maintenance personnel using normal precautions;
(3) Provide an electrical return path, under both normal and fault conditions, on rotorcraft having grounded electrical systems; and
(4) Reduce to an acceptable level the effects of static electricity on the functioning of essential electrical and electronic equipment.
[Amdt 27/4]
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