5.6 Safety Management Responsibility
Within the operation of the SMS, the Service Provider:
a) shall ensure that a safety management function is identified with organisational responsibility for development and maintenance of the safety management system (877).
b) shall ensure that this point of responsibility is, wherever possible, independent of line management and accountable directly to the highest organisational level (878).
c) shall ensure that, in the case of small organisations where combination of responsibilities may prevent sufficient independence in this regard, the arrangements for safety assurance are supplemented by additional independent means (879).
d) shall ensure that the highest level of the Service Provider organisation plays a general role in ensuring safety management (880).
5.7 Quantitative Safety Levels
5.7.1 Within the operation of the SMS, the Service Provider shall ensure that, wherever practicable, quantitative safety levels are derived and maintained for all systems (881).
5.7.2 Rationale: If the safety performance of a service or product is to be assessed and monitored it is necessary to define the safety objectives that need to be met.
5.7.3 The Service Provider should ensure that for each system the safety analysis leads to a series of quantifiable safety objectives (with the exception of human factors or areas to which only qualitative analysis is applicable) (882).
5.8 Risk Assessment and Mitigation
Within the operation of the SMS, the Service Provider:
a) shall ensure that a risk assessment and mitigation is conducted to an appropriate level to ensure that due consideration is given to all aspects of ATM (883).
b) shall ensure that changes to the ATM system are assessed for their safety significance (884) and ATM system functions are classified according to their safety severity (885).
c) shall ensure appropriate mitigation of risks where assessment has shown this to be necessary due to the safety significance of the change (886).
NOTE: Risk assessment involves, in broad terms, hazard identification, hazard assessment for severity and frequency of occurrence, risk tolerability assessment and risk removal or mitigation. More details of this process can be found later in this section.
5.9 SMS Documentation
Within the operation of the SMS, the Service Provider shall ensure that the SMS is systematically documented in a manner which provides a clear linkage to the organisation’s safety policy (887).
NOTE: The Service Provider should define the Structure, Contents, Authorities, Responsibilities and Mechanisms for SMS Documentation (888). Where available any referenced standards or requirements should be clearly traceable to Corporate, Safety Regulatory, National or International Standards or Requirements (889). In this context, 'Corporate' means applicable to all parts of the organisation, not just a 'headquarters' area. There are no precise definitions of 'standards' or 'requirements'. Both relate generally to objectives that have to be met and can be interchangeable in meaning. The mandating of such objectives can be organisational or statutory.
5.10 External Services
5.10.1 Within the operation of the SMS, the Service Provider shall ensure adequate and satisfactory justification of the safety of the externally provided services, having regard to their safety significance within the provision of the ATM service (890).
5.10.2 Rationale: A safety assessment requires input from all phases of a product or service development. For externally supplied products or services the external supplier must understand and comply with the organisation’s safety and safety management system requirements.
5.11 Safety Occurrences
5.11.1 Within the operation of the SMS, the Service Provider shall ensure that ATM operational or technical occurrences which are considered to have significant safety implications are investigated immediately (891) and any necessary corrective is taken (892).
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