Abstract: The present invention provides a bypass duct and boss assembly comprising: a bypass duct having an exterior surface, an interior surface, an edge surface, an inner bonding surface, and a side wall surface, wherein the edge surface further defines an aperture; a boss having a lip surface, a side surface, and a face surface, wherein the boss is disposed within the aperture of the bypass duct such that the lip surface of the boss forms matched bonding surfaces with a portion of the exterior surface of the bypass duct, and such that the side surface of the boss forms matched bonding surfaces with the edge surface of the bypass duct; a patch having a patch edge, a patch inner surface, and a patch outer surface, wherein the patch is disposed such that the patch inner surface forms matched bonding surfaces with the inner bonding surface of the bypass duct and the face surface of the boss, and such that the patch edge forms matched bonding surfaces with the side wall surface of the bypass duct, the patch further havi

Abstract: A method is provided for repairing a defect in a noise suppression panel. The method may be used to repair defects in a panel that may occur during the manufacture of or normal use of the panel. The method includes the steps of removing the defect from the noise suppression panel to create a cavity therein, forming material comprised of a material having acoustic damping properties into an insert configured to mate with the cavity, and placing the insert into the cavity.