Clerk perhaps moving line up for pilot? (5)
I believe the answer is:
filer
'clerk' is the definition.
(I know that filer is a type of clerk)
'moving line up for pilot?' is the wordplay.
I cannot really see how this works, but
'line' could be 'file' (file is a kind of line) and 'file' is found within the answer.
A single letter 'r' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'perhaps' acts as a link.
Can you help me to learn more?
(Other definitions for filer that I've seen before include "Office worker" , "Secretary" , "Cabinet" , "who fusses with her nails?" , "Clerk keeping records" .)