Sorry after empty show nosedives (6)
I believe the answer is:
swoops
'nosedives' is the definition.
(both can mean to fly or shoot down)
'sorry after empty show' is the wordplay.
'sorry' becomes 'oops' (I've seen this before).
'after' is a charade indicator (letters next to each other).
'empty' suggests removing the centre.
'show' with its middle removed is 'sw'.
'oops' after 'sw' is 'SWOOPS'.
(Other definitions for swoops that I've seen before include "Busts" , "Descends swiftly through the air" .)