Originally Posted by
TiredSoul
It was always my understanding that as JS you are considered a crew member regardless of seating and as such you’re required to hold the medical.
Now I could be totally wrong on that.
Maybe management pilots were considered observers not crew members. Although the FOM clearly stated that company pilots needed only a pilot cert and badge, but no medical.
But you can also do flight instruction without a medical, as long as the legally required crew compliment is present and qualified.