Second time, getting tune for part of the flight (5)
I believe the answer is:
stair
'part of the flight' is the definition.
(I've seen this before)
'second time getting tune' is the wordplay.
'second' becomes 's' (common abbreviation).
'time' becomes 't' (abbreviation).
'getting' says to put letters next to each other.
'tune' becomes 'air' (air can mean a piece of music).
's'+'t'+'air'='STAIR'
'for' is the link.
(Other definitions for stair that I've seen before include "Step as part of flight" , "Indoor step" , "Word linking way and well" , "Set of steps" , "that's between levels" .)