Which group of pilots is NOT associated with a 3rd Class Medical certificate?

A 3rd Class Medical certificate is required for various categories of pilots but is specifically important for those operating light aircraft for certain purposes. Air Transport Pilots, who conduct airline and commercial operations, are typically required to hold a 1st Class Medical certificate, which is more stringent in its health and fitness standards compared to a 3rd Class certificate.

Recreational Pilots, Instructional Pilots, and Private Pilots all fall under categories that can operate under the guidelines of a 3rd Class Medical certificate. Recreational Pilots can fly under specific limitations, while Instructional and Private Pilots also commonly operate with a 3rd Class. In contrast, Air Transport Pilots must meet the higher qualifications associated with a 1st Class Medical certificate to ensure they are fit to operate larger, more complex aircraft and manage the demands of commercial aviation.