Exposure (10)
(Another definition for visibility that I've seen is " Clarity - range of seeing".)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">exposure</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for airing that I've seen before include "Publicity" , "Expressing (a grievance) publicly" , "Exposure" , "Broadcast" , "Ventilation" .)