Quote Originally Posted by rwanttaja View Post
If you wish to fly within the Class B or C airspace, then you are required to have the transponder whether or not you have electrical, single seater or no.

Lack of electrical system excuses you from needing to have a transponder within the 30-mile Class B "Veil", as long as you stay out of the actual Class B airspace (inverted wedding cake). Again, doesn't matter how many seats the plane has.

A single seater *is* excused from the ELT requirement.

Ron Wanttaja
Well, you can fly within B or C if you have an aircraft that is not equipped if you make the request at least one hour prior to the flight. See 91.215(d)(3).