How often must a pilot with a 3rd Class Medical Certificate renew their certification if they are over 40?

A pilot with a 3rd Class Medical Certificate who is over the age of 40 must renew their certification every two years. This requirement is in place to ensure that pilots maintain the necessary medical fitness to operate an aircraft, as age can contribute to an increased risk of certain medical conditions that may adversely affect flying abilities. The FAA recognizes that pilots' health can change over time, particularly as they age, and more frequent renewals help monitor and manage potential risks associated with piloting. Therefore, the two-year renewal period for those over 40 serves as an essential safety measure for the aviation community.