Question

two three lines on air ways
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Answer 1

Explanation:

Its called Threes Wind Air....

Answer 2

Explanation:

An airway or air route is a defined corridor that connects one specified location to another at a specified altitude, along which an aircraft that meets the requirements of the airway may be flown.[1][2][3][4] Airways are defined with segments within a specific altitude block, corridor width, and between fixed geographic coordinates for satellites navigation system, or between ground-based Radio transmitter navigational aids (navaids; such as VORs or NDBs) or the intersection of specific radials of two navaids