N.Y. Comp. Codes R. & Regs. tit. 17, § 721.1
(1) Any passenger vehicle operator that has been the subject of at least 10 department vehicle inspections conducted in the preceding State fiscal year pursuant to section 140(3) of the Transportation Law shall maintain an out of service rate of less than 25 percent.
(b) Regular maintenance review.
The operator shall make a complete examination of each vehicle at the preestablished maintenance intervals for any mechanical, structural defects or other safety defects.
(3) All necessary safety defect repairs shall be made before the vehicle is returned to service.
(c) Method of repair.
All such repairs shall be made in accordance with the manufacturer's recommended procedures or industry accepted techniques. In addition, all repairs shall be done in a worker-like manner and shall not reduce the effectiveness of any component.
(d) Maintenance facility.
The maintenance facilities used by each operator shall be adequate and shall include either a suitable pit or lift in an enclosed, heated garage. If the operator arranges to use a facility not owned or leased by the operator or contracts for maintenance services, the department shall be notified of such arrangement(s) in writing.
(a) Preestablished regular maintenance intervals.
Every passenger vehicle operator shall insure that all vehicles subject to the requirements of Part 720 of this Title are examined and serviced at regular maintenance intervals preestablished by the operator, and that such operator has an effective preventive maintenance program.