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U.S. questions about mask-wearing in flight
The opponents argue that the plane is not a dangerous environment because it is well ventilated
The U.S. Transportation Security Administration (TSA) is evaluating whether or not to renew the requirement, due to expire on April 18, for passengers to wear masks on board aircrafts. On this issue overseas, there is a heated public debate between those in favor and those against: the safety devices, in fact, are optional at public events and in some schools, while on transportation it remains mandatory...
AVIONEWS - World Aeronautical Press Agency