Last Updated
：2025/12/06
locator outer marker
Noun
US
Japanese Meaning
航空において、ILSまたはIGS進入路の最終進入点付近に設置された、同位置の無線ビーコン2基から構成される地上無線航法援助装置のことで、1基のNDBで航空機を進入位置へ誘導し、もう1基のアウトマーカーが航空機通過時にその位置を知らせる役割を果たす。
（ plural ）
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(aviation, chiefly US) A ground-based radio navigation aid consisting of a pair of colocated radio beacons at the final approach fix of an ILS or IGS approach course: an NDB to guide aircraft to the approach fix, and an outer marker to alert aircraft as they pass over the station.
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locator outer marker
During the ILS approach, the crew tuned to the locator outer marker to confirm the final approach fix.
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During the ILS approach, the crew tuned to the locator outer marker to confirm the final approach fix.
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