Reverse Engineering in DO-254

In either Top Down or Reverse Engineering, the design traceability and elemental analysis (from DO-254 Appendix B) ultimately provide the evidence of completion for this task. Requirements Decomposition Prerequisites System Level Functional Requirements complete and baselined System Design Constraints Requirements Decomposition Objectives Complete decomposition of System Level Requirements into Hardware Requirements. Decomposition implies that the newly developed requirements are traceable to the System Level; the requirements traceability will be the verification that this task is complete. Capture of design specific Derived Requirements as needed to fully define the functions and performance. Derived Requirements are defined as requirements that will not Continue Reading > > >

Here are differences between a Requirement and a Constraint in DO-178C or DO-178C. DO NOT mix the two together!

Requirements – Capture Features and Functions of a system or component. Constraints – Define the Non-Functional aspects of a system or component, such as restrictions on technology, resources or techniques to be used. Also Capture a requirement at the level where it will be tested. If the “requirement” cannot be tested at the level you are working, then it should be captured at a lower or higher level. Pay careful attention to the test aspects; capture any spinoff requirements for test stands or benches; so that when that time comes the test environment is ready. Capture the other decisions made at Continue Reading > > >

Practical DO-178C / ED-12C Training opportunity (June 30, 2016: London / UK)

This DO-178C training will help organizations understand and prepare for new processes and development activities needed to satisfy DO-178C. This event will address targeted DO-178C topics and efficiently deliver industry best practices. Attendees will receive: Understanding of DO-178C / ED-12C from a “How To” and “Why” perspective along with the following: FREE PSAC & PHAC templates available FREE Access to adviceGEAR Library adviceGEAR includes whitepapers, checklists, process templates, FAA CAST Papers and more DO-178C & its’ relationship to ARP-4754A / 4761 Industry best practices: from planning, to requirements, verification and passing CERT audits 20% early-bird discount ends 16th June 2016. Continue Reading > > >

How do you become a Designated Engineering Representative or DER?

A DER is an individual, appointed in accordance with 14 CFR  183.29, who holds an engineering degree or equivalent, possesses technical knowledge and experience, and meets the qualification requirements of Order 8100.8D. A DER may be appointed to act as a Company DER and/or Consultant DER. Company DERs can act as DER for their employer and may only approve, or recommend approval, of technical data to the FAA for the company. Consultant DERs are individuals appointed to act as an independent (self-employed) DER to approve or recommend approval of technical data to the FAA. The followings are the General (but Continue Reading > > >