locator outer marker

名词 n.

英文释义

名词 n.
  1. 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. US

词形变化

locator outer markers plural
0 次浏览 数据来源: Wiktionary