This document was developed jointly by EUROCAE Working Group 63 “Complex Aircraft Systems” and SAE S-18 “Aircraft and Sys Dev and Safety Assessment Committee”. This document provides a high-level set of principles for the development assurance of aerospace vehicles and systems, including emerging technologies. The principles are meant to address experience of applying ED-79/ ARP4754 (at latest revision) across a variety of applications. If further elaboration of specific technologies is determined to be required, additional ERs/AIRs may be created. It is technically identical to SAE AIR7209.