Wouldn't give a decision to but didn't allow to land (4,2,3,3)
I believe the answer is:
left in the air
'wouldn't give a decision to but didn't' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'allow to land' is the wordplay.
I cannot really see how this works, but
'allow' could be 'le' (I've seen this in other clues) and 'le' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for left in the air that I've seen before include "Held in limbo" , "Stranded; remains undecided" , "Held pending" .)