slope-line approach

noun

Definition of slope-line approach

: a system of lights at an airport so arranged as to form a pair of sharply defined converging lines between which an airplane pilot may make a safe landing

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“Slope-line approach.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/slope-line%20approach. Accessed 8 Aug. 2020.

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