ER-042 purpose is to provide clarification on the guidance material presented in ED-203A/DO-356A “Airworthiness Security Methods and Considerations”. To achieve this, the document includes the following chapters.
Chapters 2, 3 and 4 provide concise responses to questions asked by industry regarding the application of ED-202B/DO-326B and ED-203A/DO-356A on aircraft programs. These questions are often posed to certification authorities or experts tasked with interpreting the standard. The documented questions and responses seek to offer clear and succinct explanations, ensuring consistent understanding across the industry. Importantly, the responses do not affect compliance and are typically brief, with responses no longer than two pages providing clarifications on the topic.
Chapter 5 Discussion Papers offer detailed clarification for specific sections of ED-203A/DO-356A where a simple response may not suffice. This chapter provides in-depth explanations to help industry better understand complex aspects of the standard.