Sort of champagne served up on old rugby player's aeroplane (9)
I believe the answer is:
turboprop
'aeroplane' is the definition.
(turboprop is a kind of aeroplane)
'sort of champagne served up on old rugby player's' is the wordplay.
'sort of champagne' becomes 'brut'.
'served up' shows that the letters should be reversed in order.
'on' means one lot of letters go next to another.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'rugby player' becomes 'prop' (I've seen this in other clues**).
'brut' reversed gives 'turb'.
'turb'+'o'+'prop'='TURBOPROP'
(Other definitions for turboprop that I've seen before include "It may still take off" , "Jet engine with the turbine coupled to a propeller" , "Type of aircraft engine" , "Type of aero engine" , "Pub torpor (anag) - type of aircraft" .)