N.Y. Comp. Codes R. & Regs. tit. 22, § 148.3 – Petition.

(a) A petition for relief from firearms disabilities must be made by an eligible individual in writing to the administrative judge of the district or county where the court that appointed the guardian is located. It shall be made on notice to any person or entity as designated by the administrative law judge, which may include the guardian appointed for the eligible individual and the licensing officer responsible for issuing any license to possess a firearm in the appropriate jurisdiction.
(b) The request for relief shall include any relevant evidence that will assist in the determination of whether a certificate of relief from Federal firearms disabilities should be issued, including, but not limited to:
1. (1) affidavits attesting to the character or reputation of the applicant;
2. (2) medical records detailing the applicant's mental health history;
3. (3) a current psychiatric evaluation, unless waived by the person deciding the application;
4. (4) a certified copy of the criminal history information of the eligible individual maintained on file at the New York State Division of Criminal Justice Services (DCJS), or a copy of a response from DCJS that there is no criminal history information;