14 CFR § 107.79
Voluntary surrender of certificate
July 13, 2020
(a) The holder of a certificate issued under this subpart may voluntarily surrender it for cancellation.
(b) Any request made under paragraph (a) of this section must include the following signed statement or its equivalent: “I voluntarily surrender my remote pilot certificate with a small UAS rating for cancellation. This request is made for my own reasons, with full knowledge that my certificate will not be reissued to me unless I again complete the requirements specified in §§107.61 and 107.63.”