There's an abundance of pertinent information on going to Norfolk island if you bother to look properly. Examples that spring to mind are the Dept. of Regional Development (or similar), Norfolk Island Tourism Authority, IATA Travel Centre, even Wikipedia. And, of course as already mentioned, the AIPs.
Google is your friend. Make the effort and you'll find everything you need to know - including the answer to your specific question.
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Last edited by witwiw; 29th Dec 2018 at 20:16.
Reason: typo.