18 Carriage and production of noise certificate
1 An aeroplane to which regulation 4, 5, 8, 9 or 10 applies shall not be used in the territories of member States or EEA States unless the noise certificate required by these Regulations to be in force in respect of that aeroplane is carried on board the aeroplane.
2 An aeroplane to which regulation 7, 11, 12 or 14 applies shall not take off from or land in the United Kingdom unless the noise certificate required by these Regulations to be in force in respect of that aeroplane is carried on board the aeroplane.
3 The commander of an aeroplane shall, within a reasonable time after being requested to do so by the CAA or an authorised person, cause to be produced to the CAA or that person the noise certificate in force in respect of that aeroplane.