Incorrigible author stops cracking rune article appearing in Times (11)

'incorrigible' is the definition.
Both the answer and definition are adjectives. Maybe you can see a link between them that I can't see?

'author stops cracking rune article appearing in times' is the wordplay.
I cannot really understand how this works, but
'author' could be 'pen' (to pen something is to author it) and 'pen' is found in the answer.
an anagram of 'rune' is 'unre' which is present in the answer.
'article' could be 'an' (indefinite article) and 'an' is found within the answer.
'times' could be 'tt' (an abbreviation for time written twice) and 'tt' is found within the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?