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Meeting	ACGS Committee Meeting 92 - Dayton - October 2003
Agenda Location	4 GENERAL COMMITTEE TECHNICAL SESSION 4.2 RESEARCH INSTITUTIONS, INDUSTRY AND UNIVERSITY REPORTS 4.2.2 Research Institutes and Companies 4.2.2.1 Airbus Industries
Title	Airbus Industries
Presenter	Pascal Traverse
Available Downloads*	presentation
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Abstract	An overview of Airbus A340-600 certification was given, with an emphasis on process certification of its Fly-by-Wire system. Civil airplane certification is based on product assessment: flight tests, equipment qualification, safety analysis, … A trend is to qualify in addition the system development process. This was already a standard practice for software (based on DO178B recommendations), but this is coming on system design too, based on an SAE Aerospace Recommended Practice, ARP 4754. This ARP, “certification consideration for highly integrated or complex aircraft systems” has been prepared in the mid 90, and the first formal application is likely to be by JAA on Airbus A340-600 FbW system. A340-600 is a derivative stretch of already certified A340-300, with a significantly modified FbW: structural modes control law, full electrical rudder control, new computers and servo controls. ARP 4754 recommends the implementation of several processes: - Certification process and coordination - Requirements determination and assignment of Development Assurance Level - Safety assessment - Validation of requirements - Implementation verification - Configuration management - Process assurance Most of these processes are classical. What may be of interest on A340-600 was the agreement to take credit of A340-300 for parts (architecture and functions), which were re-used, the emphasis that has been put on safety, and the JAA scrutiny on assumptions validation (validation of the aircraft model used to design the system for example). Additionally, system functions are specified with a formalism (SAO/SCADE), which allows generating automatically software for the embedded computers, and also a simulation software. A qualification of the tools and models allowed validating functions either by simulation or by test on flight computers. The choice between these two means being based on tool representativity limitations and availability.