Bold to arrive at a place you might step into in a crisis, perhaps (6)
I believe the answer is:
breach
'a place you might step into in a crisis perhaps' is the definition.
I can't judge whether this definition defines the answer.
'bold to arrive' is the wordplay.
'bold' becomes 'b' (abbreviation).
'to arrive' becomes 'reach' (reaching is a kind of arriving).
'b'+'reach'='BREACH'
'at' acts as a link.
Can you help me to learn more?
(Other definitions for breach that I've seen before include "transgression" , "Contravention" , "Gap made in a fortification" , "Gap (in a wall/barrier)" , "Violation, maybe of the peace" .)