AMS 3970/2 gives specific information about the qualification program for carbon fiber reinforced epoxy structural repair prepreg systems, applicable for 120 °C (250 °F) vacuum curing. The prepreg system may include an epoxy film adhesive to be applied in a co-curing process with the prepreg for joint and sandwich bonding. The need for a film adhesive shall be established during screening tests.
AMS3970/2 is revised to include PRI rules to manage the qualification program through the CACRC-Qualified Product Group (QPG). The qualification testing scope has been updated.