# second-class medical certificate — How long medical certificates last for pilots, commercial drivers and merchant mariners — by class, age and service type For second-class medical certificate, occupation / regulator is pilot (FAA); age / service condition is Any age; operation / activity covered is an airline transport pilot certificate for second-in-command privileges; valid for is 12th month after the month of the date of examination shown on the medical certificate; citation is 14 CFR 61.23, recorded from its source on 2026-08-11. - **Occupation / regulator:** pilot (FAA) _(our reading, not quoted from the source)_ - **Certificate and class:** second-class medical certificate _(verified: appears in the quote below)_ - **Age / service condition:** Any age _(verified: appears in the quote below)_ - **Operation / activity covered:** an airline transport pilot certificate for second-in-command privileges _(verified: appears in the quote below)_ - **Valid for:** 12th month after the month of the date of examination shown on the medical certificate _(verified: appears in the quote below)_ - **Citation:** 14 CFR 61.23 _(verified: appears in the quote below)_ ## What the source says > (2) A second-class medical certificate | (i) Any age | an airline transport pilot certificate for second-in-command privileges (other than the operations specified in paragraph (d)(1) of this section), a commercial pilot certificate (other than a commercial pilot certificate with a balloon rating when conducting flight training), a flight engineer certificate, or an air traffic control tower operator certificate | 12th month after the month of the date of examination shown on the medical certificate. ## Source - https://www.ecfr.gov/current/title-14/chapter-I/subchapter-D/part-61/subpart-A/section-61.23 Last verified: 2026-08-11. Review by: 2027-08-11. Part of [How long medical certificates last for pilots, commercial drivers and merchant mariners — by class, age and service type](https://referencesource.org/medical-certificate-validity-by-occupation/).