Earthing in Aircraft

The Earthing point for the Aircraft is its aluminum frame.  

In any power system, Earthing or grounding is necessary so that power does not flow through a person who comes in contact with a live conductor.  Earthing also helps identify faults quickly.

On the ground, the ground serves as the earthing point providing a low resistance path for current which may leak on to the body of a equipment.  In Aircrafts and even automobiles, where contact with the ground is not possible, the frame itself serves as the grounding point. 

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