VLOS

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English[edit]

Noun[edit]

VLOS (uncountable)

  1. Visual line of sight.
    • 2022 February 9, Tom Allett, “The BTP's eyes and ears in the air”, in RAIL, number 950, page 51:
      Staying within visual line of sight (VLOS) is one of the key principles of commercial drone operations, [...].
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