EC/216 2008 is a journal of EASA and not a regulatory document Each page is headed EASA Journal.
( Official Journal of the European Union)
The EU Official Journal is where the EU publishes its legislation. The fact that 216/2008 is a legislative document is clear from its title if you read it:
REGULATION (EC) No 216/2008 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 20 February 2008 on common rules in the field of civil aviation and establishing a European Aviation Safety Agency, and repealing Council Directive 91/670/EEC, Regulation (EC) No 1592/2002 and Directive
2004/36/EC
Article 70 also gives a clue to this fact:
Article 70
Entry into force
This Regulation shall enter into force on the 20th day following its publication in the Official Journal of the European Union.
And you will note the final sign off after Article 70:
This Regulation shall be binding in its entirety and directly applicable in all Member States.
Done at Strasbourg, 20 February 2008.
For the European Parliament
The President
H.-G. PÖTTERING
For the Council
The President
J. LENARČIČ