N.Y. Uniform District Court Act Law § 909

§ 909. Pleadings; amended and supplemental.\n (a) A party may amend his pleading once without leave of court at any\ntime before the period for responding to it expires, or within ten days\nafter its service or the service of a pleading responding to it. An\namended pleading which requires a responsive pleading shall be responded\nto within ten days after it is served, or within ten days after the\nexpiration of the period during which the original pleading could have\nbeen responded to, which ever is later.\n (b) Except as provided in subdivision (a), the CPLR shall govern\namended and supplemental pleadings in this court.\n