Ключевые слова: 171, air, aircraft, airfield, airplane, airport, airspace, airworthiness, ascend, aviation, blade, bristol, chopper, civil, departure, documentary, editorial, flight, fly, flying, force, helicopter, helicopters, helipad, hover, hovering, landing, machine, midair, military, mode, moving, pilot, piloting, private, propeller, rescue, rotor, rotorcraft, sky, speed, sycamore, takeoff, technology, transport, transportation, travel, vehicle, vintage, white,