Airplane wing part (4)
I believe the answer is:
flap
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">airplane wing part</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for flap that I've seen before include "Adjustable part of wing - panic" , "Minor panic; tab" , "Flutter" , "Tab - tizzy - move wings" , "Be agitated; hinged piece" .)