http://www.legislation.gov.uk/eur/2011/445/article/4/adoptedCommission Regulation (EU) No 445/2011 of 10 May 2011 on a system of certification of entities in charge of maintenance for freight wagons and amending Regulation (EC) No 653/2007 (Text with EEA relevance) (repealed)Commission Regulation (EU) No 445/2011 (repealed)Commission Regulation (EU) No 445/2011 of 10 May 2011 on a system of certification of entities in charge of maintenance for freight wagons and amending Regulation (EC) No 653/2007 (Text with EEA relevance) (repealed)2020-12-11King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32011R0445texttext/xmlen Maintenance system Article 4 1 The maintenance system shall be composed of the following functions: a the management function, which supervises and coordinates the maintenance functions referred to in points (b) to (d) and ensures the safe state of the freight wagon in the railway system; b the maintenance development function, which is responsible for the management of the maintenance documentation, including the configuration management, based on design and operational data as well as on performance and return on experience; c the fleet maintenance management function, which manages the freight wagon’s removal for maintenance and its return to operation after maintenance; and d the maintenance delivery function, which delivers the required technical maintenance of a freight wagon or parts of it, including the release to service documentation. 2 The entity in charge of maintenance shall ensure that the functions referred to in paragraph 1 comply with the requirements and assessment criteria set out in Annex III. 3 The entity in charge of maintenance shall carry out the management function itself, but may outsource the maintenance functions referred to in points (b) to (d) of paragraph 1, or parts of them, to other contracting parties subject to the provisions of Article 8. Where it resorts to outsourcing, the entity in charge of maintenance shall ensure that the principles set out in Annex I are applied. 4 Regardless of the outsourcing arrangements in place, the entity in charge of maintenance shall be responsible for the outcome of the maintenance activities it manages and shall establish a system to monitor performance of those activities.