Purpose of this guide is to create links between the EUROCODE ED-80 document "Design Assurance Guidance for Airborne Electronic Hardware" and the BNAE documents more specifically related to RAMS and describing the good practices and the pitfalls to be avoided: - RAMS Section of RG.Aero 000 40A, - RG.Aero 000 27 and RG.Aero 000 33A, - RE.Aero 703 05A, 06A.