A good look at French engineer's broadcast (6)
I believe the answer is:
eyeful
'a good look' is the definition.
(getting an eyeful is getting a good look)
'french engineer's broadcast' is the wordplay.
'french engineer' becomes 'eiffel' (Gustave Eiffel).
'broadcast' shows a homophone (sound like) (how the word might sound on the radio or TV).
'eiffel' is a homophone of 'EYEFUL'.
'at' acts as a link.
(Other definitions for eyeful that I've seen before include "Here butcher's" , "beauty!" , "fascinating spectacle?" , "Does a pupil contribute to this" , "As much as can be taken in by a look" .)