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MAA/RN/11/11 (DG)

MAA/RN/11/11 (DG)

MAA/RN/11/11

Regulatory Notice 09 Sep 11 MAA/RN/11/11 (DG) – ROLE OF THE RELEASE TO SERVICE AUTHORITY Issue 1. Where Release to Service Authorities (RTSAs) fit in the Air Safety context. Implementation 2. This guidance is effective immediately. Scope 3. This guidance is supplementary to RA 1020 – Aviation Duty Holders and MAA/RI/08/11 (DG) Air System Safety Cases dated 02 Sep 11. Guidance 4. RTSAs have important ensurance and assurance roles to undertake on behalf of SDHs, who delegate to the RTSAs responsibility and authority that is given to them by SofS. They are primarily responsible for commissioning an Air System 1 Release to Service Recommendation (RTSR) from the relevant PT and subsequent assurance of the Safety Case (SC) underpinning a RTSR before issuing the Release to Service (RTS). The issuing of an initial RTS is the trigger for formal handover of the responsibility for management of the Air System SC, any Risks to Life (RtL) associated with the relevant Air System’s operation and the System’s continuing airworthiness to the end-user ODH, who should thereafter operate routinely within the bounds of the RTS. At this point, the RTSA becomes DH-facing. Whilst, if operational imperatives require, an ODH may operate outside the RTS, such excursions should be kept to a minimum and should only be required when time has precluded his requesting an amendment to the RTS 2 . In any event, such excursions should be notified to the RTSA. Amendments to the RTS may thus be prompted for either of the following two reasons: a. In response to the RTSA being made aware 3 that significant changes in the airworthiness 4 of a platform may require, or permit, permanent changes to the RTS envelope. b. In response to a request from the ODH. 5. Through life, the RTSA has a responsibility to maintain the integrity of the RTS. However, to assist in configuration control and sustaining a stable operating environment within which RtL can 1 Including capability upgrades. 2 For practical purposes, requirements to operate outside an existing RTS that become apparent more than 48 hours in advance should routinely be the subject of a request to the RTSA for RTS amendment action. If required, within 48 hours, an ODH may authorize excursions from the RTS, based on his own auditable risk analysis, informed by relevant technical and operational advice from eg the TAA, his CAE and/or SO. 3 Invariably, in parallel with the ODH, who will have the lead on any associated risk management action(s). 4 Airworthiness is the ability of an aircraft or other airborne equipment or system to be operated in flight and on the ground without significant hazard to aircrew, groundcrew, passengers or to 3 rd parties; it is a technical attribute of materiel throughout its life cycle. 1

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