Ключевые слова: a320, aerospace, air, airbus, aircraft, airline, airliner, airplane, altitude, atmosphere, aviation, aviator, avionics, breathe, breating, captain, certification, cockpit, commercial, crew, danger, dangerous, dangers, emergency, equipment, flight, flight deck, fly, flying, high, label, mask, oxygen, panel, pilot, piloting, plane, required, requirement, safety, transportation, travel, warning,