The Collaborative International Dictionary of English v.0.48:

Aviette \A`vi*ette"\, n.
   A heavier-than-air flying machine in which the motive power
   is furnished solely by the aviator.
   [Webster 1913 Suppl.]

   Note: In the 1980's and 1990's, using modern light-weight but
         strong films and supporting structures, planes such as
         the Gossamer Condor and Gossamer Albatross were built,
         powered by a human using pedals to drive the propeller,
         which could fly for tens of miles. These machines,
         however, were seldom if ever referred to as aviettes.
         [Webster 1913 Suppl.]