Defining guidelines for European air terminal adaptation to COVID-19 measures Note: Intended for special issue "Air Transport COVID-19" not available in the issue list on May 1st (Manuscript number JATM_2020_220)

The COVID-19 pandemic has the highest impact on aviation since World War II. Airlines and airports struggle together with passengers, cargo and even legal bodies and governments. But where to start from to understand the dynamics of the impact of our subject at TxP_R: air terminals? Starting in the middle of March, when the pandemic had arrived in Italy but Europe was still on business as usual. We followed the shutdown and measures set-up at the airports mainly induced by public health authorities. The reaction at air terminals was as inhomogeneous as were the national health instructions. To prepare the path for a slow-reopening and possible future situations we started gathering information on the specific measures at European capital city hubs, the European legal guidance and supportive actions and documents of the stakeholders involved at a European and international level in aviation. The paper represents a working stage on April 28th 2020 seeking to supports researchers and authorities with gaining an overview of the status quo.