ITV air changing details (6)
I believe the answer is:
trivia
'details' is the definition.
(I've seen this before)
'itv air changing' is the wordplay.
'changing' indicates anagramming the letters.
'itv'+'air'='itvair'
'itvair' anagrammed gives 'TRIVIA'.
(Other definitions for trivia that I've seen before include "Small beer" , "Trifles, unimportant details" , "Unimportant information" , "Inconsequential facts" , "Unimportant things or details" .)