Brock Avion
... that the fuel tank of the Brock Avion is built into the ultralight aircraft's pilot's seat?
... that the <a href="./Fuel_tank" id="mwCNU" rel="mw:WikiLink" title="Fuel tank">fuel tank</a> of the <b id="mwCNY"><a href="./Brock_Avion" id="mwCNc" rel="mw:WikiLink" title="Brock Avion">Brock Avion</a></b> is built into the <a class="mw-redirect" href="./Ultralight_aircraft" id="mwCNg" rel="mw:WikiLink" title="Ultralight aircraft">ultralight aircraft</a>'s pilot's seat?