N.Y. Comp. Codes R. & Regs. tit. 12, § 8-1.11
(a) The person or firm making installation as specified in section 8-1.10 shall notify the commissioner, in writing, at least three days before completion of the installation, and shall in the presence of a representative of the commissioner subject the elevator to the tests prescribed by this section.
(7) The hoistway doors or gates, elevator equipment and machinery shall be examined to determine if the installation conforms to the requirements of the law and this Part.
(b) Certificate of approval.
If the elevator satisfactorily passes such tests and the inspection required by the provisions of paragraphs (1) to (7) of subdivision (a), the Industrial Commissioner shall issue a certificate to that effect, which shall bear the date of issue and the same shall be posted in a conspicuous place in the car.