Aircraft with no engine (6)
I believe the answer is:
glider
(Other definitions for glider that I've seen before include "Flying machine without engine" , "Girdle for silent flier" , "craft without power" , "Motorless plane" , "Sailplane" .)
I believe the answer is:
glider
(Other definitions for glider that I've seen before include "Flying machine without engine" , "Girdle for silent flier" , "craft without power" , "Motorless plane" , "Sailplane" .)