4. Where the operating restriction concerns the withdrawal of marginally compliant aircraft from an airport, no additional services above the number of movements with marginally compliant aircraft in the corresponding period of the previous year shall be allowed at that airport six months after the notification referred to in paragraph 1. The Member States shall ensure that the competent authorities decide on the annual rate for reducing the number of movements of marginally compliant aircraft of affected operators at that airport, taking due account of the age of the aircraft and the composition of the total fleet. Without prejudice to Article 5(4), that rate shall not be more than 25 % of the number of movements of marginally compliant aircraft for each operator serving that airport.