N.Y. Family Court Act § 167: Effect of personal appearance

§ 167. Effect of personal appearance. Whenever a person, whether adult

or child, to whom a summons shall have been directed shall physically

appear before the court on the return day of such summons, it shall be

conclusively presumed that the summons was duly served upon such person

in accordance with the provisions of this act unless such person or some

one in his behalf shall on such return day make objection to the manner

of service.