Rarity who is excited to be allowed to fly (9)

I believe the answer is:

airworthy

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'be allowed to fly' is the definition.
I can't judge whether this definition defines the answer.

'rarity who is excited' is the wordplay.
'is excited' indicates an anagram.
'rarity'+'who'='raritywho'
'raritywho' with letters rearranged gives 'AIRWORTHY'.

'to' acts as a link.

Can you help me to learn more?

(Other definitions for airworthy that I've seen before include "high security?" , "Safe to fly" , "How rarity may be fit to fly" , "safe for flying" , "suitable for sending up" .)

I've seen this clue in The Guardian.

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