All over the world, as far as i know, you can be a flightinstructor, as long as you maintain your flight medical. No matter how old you are !!
But not in Saudi and other Arab countries, UAE, and Indonesia included.
When reaching the age of 65, your done !
That, I think, is a waste of experienced aviators, with a lot of knowledge !
To my opinion that is stupid policy !
That is the point I am trying to make !!
Have a good day guys and dolls !
Gerrit