Does A First Class Medical Revert To A Second Class

https://aviation.stackexchange.com/questions/17041/does-my-1st-class-medical-give-me-2nd-and-3rd-class-medical-privileges-after-it

You don't see this language in the text above the table because they are not concerned with the duration of the privileges but only the minimum required medical class for specific operations. For example, 61.23 (a) (2) (ii) says you must hold at least a second class …

Airman Medical Certfication - AOPA

https://www.aopa.org/go-fly/medical-resources/airman-medical-certification

Pilots who are age 40 and older must renew First class medical certificates every six months. A Second class is required for pilots who fly commercially—in operations …

Different FAA Medical Certificate Classes Explained …

https://www.flyaeroguard.com/learning-center/medical-certificates/

Guide for Aviation Medical Examiners - Federal Aviation …

https://www.faa.gov/about/office_org/headquarters_offices/avs/offices/aam/ame/guide/app_process/general/validity/

60 calendar months for operations requiring a third class medical certificate if the airman has not reached age 40 on or before the date of examination. Second Class …