Avionics System Requirements
Context
A commercial aerospace client was developing an advanced avionics capability for a passenger aircraft platform, focused on replacing and enhancing Line Replaceable Unit (LRU) functionality. The objective was to consolidate multiple analogue and digital aircraft signals into a single, certified software system integrated with the aircraft flight computer, while meeting strict airworthiness and safety requirements.
AmfiskA Role
AmfiskA was engaged to strengthen the systems engineering capability within the programme, providing requirements management, systems design support, and regulatory assurance across a safety‑critical avionics environment.
What We Did
Managed system requirements within DOORS, ensuring accuracy, traceability, and timely updates
Supported Change Review Boards (CRBs) by assessing proposed requirement changes and providing evidence‑based justification
Maintained and updated the System Design Document (SDD) to reflect evolving technical and regulatory requirements
Developed environmental testing requirements in collaboration with Quality teams, ensuring compliance with RTCA DO‑160G
Worked alongside Safety specialists to define system safety requirements aligned with ARP4754A, DO‑178C, and DO‑254 standards
Applied operational and interface analysis across avionics architectures, including ARINC 429, 629, and 664 AFDX
Outcome
The client achieved a robust, certifiable avionics architecture with well‑controlled requirements, clearly documented design decisions, and a defensible safety case taken to first flight. AmfiskA’s support reduced delivery risk, improved regulatory confidence, and ensured the system was positioned for successful integration and certification within a commercial aviation environment.