Undercarriage (7,4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">undercarriage</span>' is the definition.<br/ ><span class="explanation-format__explanation">(landing gear is a kind of undercarriage)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for landing gear that I've seen before include "Aircraft undercarriage" , "may be seen coming down to earth after flight" , "Plane's undercarriage" , "It gets you down in the end" , "Aircraft's undercarriage" .)