Article 5 Requirement of noise certificate
Subject to paragraph (2) of this article an aircraft to which this Order applies shall not land or take-off in the United Kingdom unless—
in respect of an aircraft specified in paragraphs (a), (b), (d) and (e) of article 4 of this Order there is in force in respect of that aircraft a noise certificate—
issued by the CAA under article 6 of this Order; or
issued or validated by the competent authority of the country in which the aircraft is registered, being a country prescribed as one which applies standards which in the opinion of the Secretary of State are substantially equivalent to those required for the issue of a noise certificate by the CAA; or
issued or validated in pursuance of the Convention by the competent authority of the State in which the aircraft is registered, and
in respect of an aeroplane specified in paragraph (c) of article 4 of this Order there is in force in respect of that aeroplane a noise certificate—
issued by the CAA under article 6 of this Order; or
issued or validated by the competent authority of the country in which the aeroplane is registered, being a country which applies standards which in the opinion of the CAA are substantially equivalent to those required for the issue of a noise certificate by the CAA, and
any conditions subject to which the certificate was issued are complied with.
The foregoing prohibition shall not apply to—
an aircraft flying in accordance with the “A Conditions” or the “B Conditions” set forth in Schedule 2 to the Air Navigation Order 1985;
an aircraft landing or taking-off at a prescribed place.