Ключевые слова: 2, 30s, aerospace, aircraft, airplane, apprenticeship, assembling, assembly, business, caucasian, charter, cockpit, commercialairplane, engineer, engineering, hangar, helicopter, inspecting, inspection, instrument, interior, learning, maintaining, maintenance, mechanic, oneperson, panel, people, person, professionaloccupation, skill, technology, thirties, trail, training, transportation, travel, vertical, waistup, working,