AMS 3970 gives information about qualification rules and the relation between the different specification parts involved, such as the Technical Specification (TS), Material Specification (MS), and Purchasing Specification (PS). The link to the material qualification and qualified products is presented. This specification is only applicable to carbon fiber fabric and epoxy or modified epoxy resin prepreg systems used for repair of carbon fiber composite structures. Generally, an epoxy or modified epoxy resin film adhesive will be part of the prepreg system for co-cure bonding applications.
SAE AMS3970-1999 history
2016SAE AMS3970A-2016 Carbon Fiber Fabric Repair Prepreg, 120 °C (250 °F) Vacuum Curing Part 0 - Introduction