Airman in an awfully good bunch (5)
I believe the answer is:
pilot
'airman in an awfully good bunch' is the definition.
'pilot' can be an answer for 'airman' (pilot is a kind of airman). I am not certain of the 'in an awfully good bunch' bit.
'good bunch' is the wordplay.
'good' becomes 'pi' (old-fashioned term for pious).
'bunch' becomes 'lot' (synonyms).
'pi'+'lot'='PILOT'
Can you help me to learn more?
(Other definitions for pilot that I've seen before include "Steer, test (scheme)" , "Person in charge of aircraft" , "Guide - flier" , "Small flame that ignites a gas boiler" , "trial episode" .)