Critical of hint accompanying repair (5-3-2)
I believe the answer is:
touch-and-go
'critical' is the definition.
(I've seen this before)
'hint accompanying repair' is the wordplay.
I cannot quite understand how this works, but
'hint' could be 'touch' (touching is a kind of hinting) and 'touch' is found within the answer.
'accompanying' could be 'and' (and can mean with or accompanying) and 'and' is located in the answer.
The remaining letters 'go' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Another definition for touch-and-go that I've seen is " (Of an outcome) possible but very uncertain".)