A good start for the airman (5)
I believe the answer is:
flier
I believe this is a double definition.
'a good start' is the first definition.
(I've seen this before)
'the airman' is the second definition.
(synonyms)
'for' is the link.
(Other definitions for flier that I've seen before include "Good start" , "Rifle for airman" , "Leaflet for distribution" , "Advertising leaflet" , "Advertisement" .)