http://www.legislation.gov.uk/eur/2018/545/article/53Commission Implementing Regulation (EU) 2018/545 of 4 April 2018 establishing practical arrangements for the railway vehicle authorisation and railway vehicle type authorisation process pursuant to Directive (EU) 2016/797 of the European Parliament and of the Council (Text with EEA relevance)Commission Implementing Regulation (EU) 2018/545Commission Implementing Regulation (EU) 2018/545 of 4 April 2018 establishing practical arrangements for the railway vehicle authorisation and railway vehicle type authorisation process pursuant to Directive (EU) 2016/797 of the European Parliament and of the Council (Text with EEA relevance)2020-12-12King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02018R0545-20200616texttext/xmlen2020-06-16 CHAPTER 8 <Strong>SUSPENSION OR REVOCATION OR AMENDMENT OF AN ISSUED AUTHORISATION</Strong> Suspension, revocation or amendment of an issued authorisation Article 53 1 Temporary safety measures in the form of suspension of a vehicle type authorisation may be applied by the authorising entity in accordance with Article 26(3) of Directive (EU) 2016/797. 2 In the cases referred to in Article 26(3) of Directive (EU) 2016/797 and following a review of the measures taken to address the serious safety risk, the authorising entity that issued the authorisation may decide to revoke or amend the authorisation in accordance with Article 26(4) of Directive (EU) 2016/797. 3 The applicant may launch an appeal against the decision to revoke or amend an authorisation in accordance with Article 26(5) of Directive (EU) 2016/797. 4 The authorising entity shall inform the Agency where there is a decision to revoke or amend an authorisation and give the reasons for its decision. The Agency shall inform all NSAs of the decision to revoke or amend an authorisation and the reasons for the decision.