(1) This paragraph applies if the regulator is satisfied that -

(a) a person has ceased to perform aviation activity; and

(b) there is no realistic prospect that the person will resume aviation activity.

(2) Where paragraph (1) applies -

(a) the regulator must inform the UK ETS authority; and

(b) the UK ETS authority must update the aviation allocation table to record that the person has permanently ceased to perform aviation activity.