This document sets out the general safety regulatory requirements for all ATM services‚ personnel responsible for safety related tasks within the provision of ATM services across the ECAC area, the safety regulatory requirements for air traffic controllers and the safety regulatory requirements for engineering and technical personnel undertaking operational safety related tasks. Since ICAO Annex 1, Personnel Licensing, was first published, there has been a significant increase in the volume of air traffic throughout the ECAC area. Although Annex 1 has been amended during this period, the basic licensing procedures, including the ratings, have remained unchanged. The increase in traffic, together with new technology, has led to more complex ATC procedures which, in turn, require controllers to become more specialised and to use more advanced controlling techniques. In addition, an inclusion has been developed to detail the safety regulatory requirements for engineering and technical personnel undertaking operational safety related tasks. It is to be noted that, no provisions are foreseen in ICAO SARPS in respect of the mentioned category of ATM personnel and ESARR 5 is the first safety regulatory document to ensure that competency of technical and engineering staff is adequately and formally covered in a harmonised way at European wide level.