PAS 62647-22-2011 Process management for avionics – Aerospace and defence electronic systems containing lead-free solder – Part 22: Technical guidelines (Edition 1.0)
"This PAS is intended for use as technical guidance by Aerospace system Suppliers@ e.g.@ Aerospace system Original Equipment Manufacturers (OEMs) and Aerospace system maintenance facilities@ in developing and implementing designs and processes to ensure the continued performance@ quality@ reliability@ safety@ airworthiness@ configuration control@ affordability@ maintainability@ and supportability of high performance aerospace systems (subsequently referred to as AHP) both during and after the transition to Pb-Free electronics. This PAS is intended for application to aerospace products; however@ it may also be applied@ at the discretion of the user@ to other products with similar characteristics@ e.g.@ low-volume@ rugged use environments@ high reliability@ long lifetime@ and reparability. If other industries wish to use this PAS@ they may substitute the name of their industry for the word ""Aerospace"" in this PAS. The guidelines may be used by the OEMs and maintenance facilities to implement the methodologies they use to ensure the performance@ reliability@ airworthiness@ safety@ and certifiability of their products@ in accordance with IEC/PAS 62646-1 (GEIA-STD-0005-1)@ ""Performance Standard for High Performance Electronic Systems Containing Pb-Free Solder."" This PAS also contains lessons learned from previous experience with Pb-Free aerospace electronic systems. The lessons learned give specific references to solder alloys and other materials@ and their expected applicability to various operating environmental conditions. The lessons learned are intended for guidance only; they are not guarantees of success in any given application."