How long is the duration for a third class medical certificate for a pilot under 40?

The duration of a third class medical certificate for a pilot under 40 years old is 60 months, which means it remains valid for five years from the date of the exam. This time frame allows pilots to fly under the privileges granted by a third class medical until they reach 40 years of age, after which the duration changes. Understanding this duration is crucial for maintaining legal flying privileges, as pilots must ensure they have a valid medical certificate that complies with FAA regulations. The other time frames do not align with the regulations set for medical certifications, which specify the five-year period for pilots under 40.