N.Y. Comp. Codes R. & Regs. tit. 22 § 1250.10 : JUDICIARY — Courts — Supreme Court — All Departments —Part 1250 — Dismissal of a Matter

(a) Civil Matters. In the event that an appellant fails to perfect a civil matter within six months of the date of the notice of appeal, the order of transfer, or the order granting leave to appeal, as extended pursuant to section 1250.9(b) of this Part, the matter shall be deemed dismissed without further order.
(b) Criminal Matters. The court upon its own motion or the motion of a respondent may dismiss a criminal appeal pursuant to C PL 470.60.
(c) Motion to Vacate Dismissal. When an appeal or proceeding has been deemed dismissed pursuant to subdivision (a) or by order of the court for failure to perfect, a motion to vacate the dismissal may be made within one year of the date of the dismissal. In support of the motion, the movant shall submit an affidavit setting forth good cause for vacatur of the dismissal, an intent to perfect the appeal or proceeding within a reasonable time, and sufficient facts to demonstrate a meritorious appeal or proceeding.

N.Y. Comp. Codes R. & Regs. Tit. 22 § 1250.10

Adopted New York State Register October 31, 2018/Volume XL, Issue 44, eff. 9/17/2018