Patent ID: 8661683
Filing Date: 2014-03-04
Classification: B64D,Y10T

Abstract:
1. A method for preventing lightning damage to a metal structural component that is susceptible to the damage by electro-magnetic effects, the method comprising: forming holes in the metal structural component prior to attaching the metal structural component to a second component; placing bushings into the holes in the metal structural component in a manner to create an interference fit between the bushings and the holes prior to attaching the metal structural component to the second component, wherein the bushings have bushing holes; drilling the bushing holes, after placing the bushings into the holes in the metal structural component in the manner to create the interference fit, to increase a diameter of the bushing holes such that the diameter of the bushing holes are sufficient for receiving fasteners during attachment of the metal structural component to the second component; and attaching the metal structural component to the second component by installing fasteners into the bushing holes after the drilling of the bushing holes, wherein damage from an electro-magnetic effect occurs in the bushing rather than the metal structural component.