NOTICE ADVISORY TO GALILEO USERS (NAGU) 2016063 DATE GENERATED (UTC): 2016-12-15 12:00 NAGU TYPE: GENERAL NAGU NUMBER: 2016063 NAGU SUBJECT: GALILEO INITIAL OPEN SERVICE (OS) DECLARATION NAGU REFERENCED TO: N/A START DATE EVENT (UTC): 2016-12-15 12:00 END DATE EVENT (UTC): N/A SATELLITE AFFECTED: ALL SATELLITES WITH USABINIT NAGU ISSUED EVENT DESCRIPTION: GALILEO INITIAL OPEN SERVICE (OS) IS DECLARED OPERATIONAL. USABINIT NAGU ISSUED FOR SATELLITES CONTRIBUTING TO THE SERVICE. SIS STATUS FLAGS ARE USABLE. NAGU 2013022 IS CANCELLED. USERS ARE ADVISED TO VISIT THE EUROPEAN GNSS SERVICE CENTRE WEB PORTAL (WWW.GSC-EUROPA.EU) TO DOWNLOAD THE OS SERVICE DEFINITION DOCUMENT (SDD).