Ключевые слова: adventure, air, aircraft, airline, airliner, airplane, airport, airspace boundaries, attention, aviation, ban, close, concept, coronavirus, danger, destination, flight ban, flights, forbidden, jet, limiting flights, modern, on the forbidding sign, outbreak, pandemic, passenger, plane, prohibit, prohibited, prohibition, quarantine, red, risk, sign, sign the ban, stop, symbol, technology, the plane, tourism, traffic, transport, transportation, travel, trip, ukraine, war, warning, zone,