The present invention provides a first metal formed on the surface of the central body in order to prevent a fire or physical damage in the fuel storage device due to sparks, such that the current due to the lightning strikes during the flight flows through the non-conductor fuel storage device without great resistance A net, a second metal net formed on the surface of the front and rear guards, and a first metal net and a second integrally formed with the first metal net of the central body, which are crimped and fixed to the second metal net of the front and rear guards. Provided is an external fuel storage device for an aircraft having a lightning damage prevention device composed of means for electrically connecting a metal network.;The connecting means of the lightning damage prevention device is composed of a piece of aluminum squeezed between the first metal net and the central surface, and a screw, a dimple washer and a nut fixing the piece of aluminum to the second metal net.
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