Check with pilot's spokesperson (8)
I believe the answer is:
chairman
'spokesperson' is the definition.
(a chairman might act as a spokesperson)
'check with pilot's' is the wordplay.
'check' becomes 'ch' (abbreviation).
'with' says to put letters next to each other.
'pilot' becomes 'airman' (someone who flies aircraft).
'ch'+'airman'='CHAIRMAN'
(Other definitions for chairman that I've seen before include "Sedentary male of a committee" , "Meeting leader" , "Mao?" , "One in charge of a meeting" , "Committee leader" .)