The impact of COVID-19 on the global air transport supply chain continues to be significant , with airlines struggling to cope with the unpredictable and ever-changing border restriction measures implemented by States. From the outset of the pandemic , these fluctuating border regulations impacted both the trave ling public and the transportation of crucial medical supplies . As a result, the International Civil Aviation Organization ( ICAO) Collaborative Arrangement for the Prevention and Management of Public Health Events in Civil Aviation (CAPSCA)made public their initial “Harmonized Guidance on Facilitating Cargo Flights and Protecting Crew during the COVID-19 Pandemic ”.