https://www.heliguy.com/blogs/knowledge-base/are-there-fees-for-renewing-my-pfco-operational-authorisation/
Are there fees for renewing my PfCO / Operational Authorisation?
This is a page for a special FAQ. Namely - Are there fees for renewing my PfCO / Operational Authorisation?
operational authorisationfeesrenewing
https://info.altinn.no/en/forms-overview/civil-aviaton-authority/soknad-om-operasjonstillatelse-i-spesifikk-kategori/
Altinn - Application for an operational authorisation in the specific category
operational authorisationspecific categoryaltinnapplication