Checkout_my_Six
Touchdown! Greaser!
.....and reading across that row.....does not include exercising the privileges of a commercial pilot. That's only good for 12 months if you're under 40 yo.Nope, your both incorrect. At NO TIME does a medical certificate revert to a lower class...EVER. It all depends upon the requirements of the operation. i.e. ATP, First Class, Commercial - Second Class, Private or LSA - 3rd class. There are further provisions based upon the pilots age but that is all. So in my question. A Private Pilot under 40 has a FIRST CLASS medical...it is "good" for 60 months.
Attached is a screen shot of FAR 61.23 Duration of Medical Certificates. You have to start in the left column and then work you way to the right in the proper area for your circumstances. AND no special issuance.