noun
instrument landing system; ILS
Aviation term for a precision runway approach system using radio signals. Often abbreviated as ILS.
パイロットは計器着陸装置を使って霧の中を着陸した。
The pilot landed in the fog using the instrument landing system.
Compound of 計器 (instrument), 着陸 (landing), and 装置 (system/device). A direct translation of the English term 'instrument landing system'.