SAE AMS3920A PDF

This specification establishes the acceptance criteria and inspection requirements for adhesive-bonded sandwich structures including the metal-to-metal bonding found in these structures, but usage is not limited to such applications and each application should be considered individually.

The classification of adhesive bonded structures specified in this specification shall be of the following types:

Type 1: Components which are fracture or fatigue critical as defined in MIL-I-6870 and components, the single failure of which would cause significant danger to operating personnel or would result in an operational penalty. This includes loss of major components, loss of control, unintentional release, inability to release armament stores, or failure of weapon installation components.

Type 2: All components not classified as Type 1.