航こう空くう無む線せん

noun

aeronautical radio; aircraft radio

Refers to radio communication systems used in aviation, including air-to-ground and air-to-air communications.

• パイロットは航こう空くう無む線せんで管かん制せい塔とうと連れん絡らくを取とった。

  The pilot contacted the control tower via aeronautical radio.