IEC/TS 62647-21:2013(E) is designed to assist program management and/or systems engineering management in managing the transition to lead-free electronics to assure product reliability and performance. The basic principles delineated in this document can be used for program management and/or systems engineering management of any aerospace and/or high performance program. The annexes in the document describe tools that can be used in conjunction with this document. This document is designed to assist a program in assuring the performance, reliability, airworthiness, safety, and certifiability of product(s), in accordance with IEC/TS 62647-1.