Search Search Sort by Most recentA-ZZ-ARelevance Select activity Toggle facet Select option Communications, navigation and surveillance (1) Optimised operational performance | Network Manager (1) Scarce resources management (2) Search Sort by Most recentA-ZZ-ARelevance 2 results found Function Transponder code function Publication Secondary Surveillance Radar Code Allocation List for the ICAO EUR Region (CAL) Contact us × First name Last name Email Your question I agree that my data can be processed in accordance with EUROCONTROL's privacy and data protection policy. We take data management seriously. At EUROCONTROL, we manage your data responsibly and do not provide it to third parties. We only use and process your data to answer your question and for quality control purposes. We apply our internal data protection rules, which are aligned with the General Data Protection Regulation, to all of our data-processing. Read our full privacy and data protection policy to learn more.