With this pass, one may take flight (8,4)
I believe the answer is:
boarding card
'with this pass one may take flight' is the definition.
'boarding card' can be an answer for 'pass' (boarding card is a kind of pass). I'm not sure about the remainder of the definition.
'with this pass one may take' is the wordplay.
'with' is a charade indicator (letters next to each other).
'this pass' becomes 'boarding' (boarding pass is a kind of pass).
'one may take' becomes 'card' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'boarding'+'card' is 'BOARDING-CARD'.
Can you help me to learn more?
(Another definition for boarding card that I've seen is " What one needs to get on".)