Owner of trunk in the plane that's flying (8)
I believe the answer is:
elephant
'owner of trunk' is the definition.
(I know that elephant\\u0027s trunk is part of elephant)
'the plane that's flying' is the wordplay.
'that's flying' is an anagram indicator (letters fly around into new positions).
'the'+'plane'='theplane'
'theplane' is an anagram of 'ELEPHANT'.
'in' acts as a link.
(Other definitions for elephant that I've seen before include "Trumpeter" , "Trunk carrier?" , "Source of ivory" , "Creature" , "The animal that never forgets" .)