GM1 ATS.OR.205(a)(1)(iii) Safety assessment and assurance of changes to the functional system

• ED Decision 2017/001/R found in: ATM/ANS Provision of Services (2017/373) (Feb 2023)

GM1 ATS.OR.205(a)(1)(iii) Safety assessment and assurance of changes to the functional system ED Decision 2017/001/R INTERACTIONS The identification of changed interactions is necessary in order to identify the scope of the change because any changed behaviour in the system comes about via a changed interaction. Changed interaction happens via an interaction at an interface of the functional system and the context in which it operates. Consequently, identification of both interfaces and interactions is needed to be sure that all interactions have identified interfaces and all interfaces have identified interactions. From this, all interactions and interfaces that will be changed can be identified. GM1 ATS.OR.205(a)(1)(iii) Safety assessment and assurance of changes to the functional system ED Decision 2017/001/R INTERACTIONS The identification of changed interactions is necessary in order to identify the scope of the change because any changed behaviour in the system comes about via a changed interaction. Changed interaction happens via an interaction at an interface of the functional system and the context in which it operates. Consequently, identification of both interfaces and interactions is needed to be sure that all interactions have identified interfaces and all interfaces have identified interactions. From this, all interactions and interfaces that will be changed can be identified.