The <a href="https://en.wikipedia.org/wiki/Space_Shuttle_Enterprise" id="mwARI" rel="mw:WikiLink" title="Space Shuttle Enterprise">Space Shuttle <i id="mwARM">Enterprise</i></a> test vehicle is carried on its maiden "flight" on top of a <a href="https://en.wikipedia.org/wiki/Boeing_747" id="mwARQ" rel="mw:WikiLink" title="Boeing 747">Boeing 747</a>.