Orderly in airborne attack (4)
I believe the answer is:
neat
'orderly' is the definition.
(synonyms)
'in airborne attack' is the wordplay.
'in' indicates a hidden word.
'NEAT' can be found hidden inside 'airborne attack'.
(Other definitions for neat that I've seen before include "avoiding water?" , "beef" , "Alcoholic drink without a mixer" , "Tidy - undiluted" , "bull, eg" .)