Article 25a 8.

Where aircraft operators that hold an air operator certificate issued by a Member State or are registered in a Member State, including in the outermost regions, dependencies and territories of that Member State, operate flights between two different States listed in the implementing act adopted pursuant to paragraph 3 of this Article, including flights that take place between Switzerland, the United Kingdom and States listed in the implementing act adopted pursuant to paragraph 3 of this Article, and those States allow aircraft operators to use units other than those on the list adopted pursuant to Article 11a(8), the Commission shall be empowered to adopt implementing acts allowing those aircraft operators to use unit types additional to those on the list or not to be bound by the conditions of Article 11a(2) and (3) in respect of emissions from such flights. Those implementing acts shall be adopted in accordance with the examination procedure referred to in Article 22a(2).