May 1916: First parasite aircraft, a <a href="https://en.wikipedia.org/wiki/Bristol_Scout" class="extiw" title="en:Bristol Scout">Bristol Scout</a> hooked on the upper wing of <a href="https://en.wikipedia.org/wiki/Felixstowe_Porte_Baby" class="extiw" title="en:Felixstowe Porte Baby">Felixstowe Porte Baby</a> flying boat
Unknown author<span style="display: none;">Unknown author</span> likely British Official
1916-05
<a rel="nofollow" class="external autonumber" href="http://www.airspacemag.com/history-of-flight/piggyback-airplanes-97346352/">[1]</a>