AMS3970/4 specifies the batch release and delivery requirements for film adhesive used for repair. This specification is applicable only when the film adhesive is used as part of the prepreg system as defined in AMS3970 and AMS3970/1.
SAE AMS3970/4A-2016 history
2016SAE AMS3970/4A-2016 Carbon Fiber Fabric Repair Prepreg, 120 °C (250 °F) Vacuum Curing Part 4 - Purchasing Specification for Film Adhesive
2011SAE AMS3970/4A-2011 Carbon Fiber Fabric Repair Prepreg, 120°C (250°F) Vacuum Curing Part 4 - Purchasing Specification for Film Adhesive