(a) General.
(1) The holder of a certificate with an expiration date may not, after that date, exercise the privileges of that certificate.
(2) Except for a certificate issued with an expiration date, a pilot certificate is valid unless it is surrendered, suspended, or revoked.
(c) Pilot certificates.
(1) A pilot certificate (including a student pilot certificate issued after April 1, 2016 issued under this part is issued without a specific expiration date.
(2) The holder of a pilot certificate issued on the basis of a foreign pilot license may exercise the privileges of that certificate only while that person’s foreign pilot license is effective.
For more information refer to §61.19
Remember, your private pilot certificate does not expire. However, some of your privileges do. Your privilege to act as pilot in command and your privilege to carry passengers needs to be kept current. Regulations to follow in this ground will further talk about these aspects.