There is an overwhelming amount of information in these documents, but in short, you only need to note the following in the opinion:
Commission Regulation (EU) No 965/2012 is amended as follows:
(2) In Article 6 ‘Derogations’, paragraph 4 is deleted:
Meaning any national regulation is replaced by EASA regulation. For the UK CAP will be history.
SPA.HOFO.105 Approval for helicopter offshore operations
(c) The operator shall, prior to performing operations from a Member State other than the Member State that issued the approval under (a), inform the competent authorities in both Member States of the intended operation.
Meaning operators form any EU state may commence operation to and from the UK continental shelf after only notifying UK CAA. UK CAA will be unable to approve and perform any oversight of the operation, except from performing ramp checks.
There are no competence requirements for the authority issuing the SPA.