ACI World updates guidance on restart for airports MONTREAL, Canada, 4 days ago Airports Council International (ACI) World, the trade association of the world’s airports, has published new guidance for airports to help them prepare for restart and recovery from the Covid-19 pandemic and its impact on their operations. As the trajectory of recovery has been affected by new variants of Covid-19 and the new restrictions introduced by governments in response, the second edition of ACI World’s Aviation Operations during Covid-19 – Business Restart and Recovery, provides updated best practice examples and guidance for both initial restart and longer-term recovery.