Article 13 Validation of maintenance engineers’ licences etc.
The Department may, subject to such conditions as it thinks fit, issue a certificate of validation of—
an aircraft maintenance engineer’s licence granted in accordance with the laws and procedures of a Contracting State;
an approval given in accordance with Part 145; or
an aircraft maintenance licence granted under Part 66.
The holder of a licence rendered valid under paragraph (1) shall not exercise the privileges of such a licence if he knows or suspects that his physical or mental condition renders him unfit to exercise such privileges.
The holder of a licence rendered valid under paragraph (1) shall not, when exercising the privileges of such a licence, be under the influence of drink or a drug to such an extent as to impair his capacity to exercise such privileges.