Amendment 1 to IPC/WHMA-A-620B This amendment provides resolution to some internal conflicts, aligns common criteria to other IPC standards, and corrects some editorial errors. This amendment is only to be used in conjunction with IPC/WHMA-A-620 Revision B, October 2012. Follow your company policy and procedures to make pen and ink changes or notations to the published IPC/WHMA-A-620 Revision B...