N.Y.C. Admin. Code § 28-304.6.4.1: § 28-304.6.4.1 Periodic inspections.

For the periodic inspections listed in Table N1 of ASME A17.1, as modified by chapter K1 of appendix K of the New York city building code, the performing inspector shall, on the day of each inspection: (i) complete the periodic inspection report, documenting all violating conditions, if any, and affix his or her signature; (ii) provide a copy of such report to the owner or owner's representative; and (iii) affix the date and his or her signature over a stamp identifying his or her approved elevator agency and his or her approval number on the inspection certificate issued by the department attesting to completion of items (i) and (ii). No witnessing agency is required to witness the periodic inspections.