Enforcement notice
11.—(1)  Where the Commissioner is of the opinion that any person has failed to comply with any general requirement of a security directive issued to him, the Commissioner may serve on that person an enforcement notice in writing —
(a)specifying the general requirement of the security directive with which he has, in the opinion of the Commissioner, failed to comply; and
(b)specifying, subject to paragraph 12, the measures that ought to be taken in order to comply with that requirement.
(2)  For the purposes of this paragraph, a requirement of a security directive is a general requirement if the provision imposing the requirement —
(a)has been included in 2 or more security directives issued to different persons (whether or not at the same time); and
(b)is framed in general terms applicable to all persons to whom those security directives are issued.
(3)  Before serving any enforcement notice under sub-paragraph (1), the Commissioner shall inform the Civil Aviation Authority of Singapore of the security measures to be specified in the enforcement notice, and may take account of any advice given by that Authority with respect to those security measures.