Originally Posted by
Elcapiperu
To show up to a CFI checkride is it ok to have a first class medical which has only second or third class privileges due to being more than 12 months old? Also I understand a CFI can teach with only a third class medical correct? I would rather not have to spend the extra few bucks if all I need to teach is 3rd class privileges anyhow since I can use it for about another 4 years or so.
To show up to a CFI checkride, you should have a very good idea of the answer to this question or at least where to find the answer in the regs.
Checkrides require a 3rd class medical (even an ATP checkride only requires a 3rd class medical). And yes, your First Class medical that is old enough to only be good for the class privileges qualifies.
Acting as a flight instructor requires at least a 3rd class medical if you must act as PIC or as a required pilot. If not, no medical at all is required.
All these rules are in FAR 61.23, entitled "Medical certificates: Requirement and duration."