Crew member checks mounting fear in two ways (7)
I believe the answer is:
steward
'crew member' is the definition.
(I've seen this before)
'in two ways' is the wordplay.
'two ways' can mean two substitutions for 'way'.
'in' is an insertion indicator.
'way' becomes 'steard' (I am not sure about this - if you are sure you should believe this answer much more).
'way' becomes 'w' (Compass direction - West).
'steard' enclosing 'w' is 'STEWARD'.
'checks mounting fear' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for steward that I've seen before include "Crowd supervisor" , "Horse-racing official" , "Overseer" , "College caterer" , "Crew member" .)