What you said originally No there isn't that's where you are confused. I'll say it once more Sport pilot refers to the airman. there is no weight limit for a pilot Light sport refers to the aircraft itself, with a max weight of 1320 lbs. I think what you are meaning, and correct me if I'm wrong, is that .... Under "BasicMed", private pilots can fly as pilot in command of aircraft authorized to carry up to six occupants and weighing up to 6,000 pounds maximum certificated takeoff weight; carry up to five passengers; fly within the United States day or night, VFR or IFR; at altitudes up to 18,000 feet msl; That's not sport pilot, or light sport. With a private pilot License, you can fly a light Sport aircraft as Pilot in command without a certifying medical. You're still a private pilot, But operating under Sport pilot rules. Oh..., and BTW, you self certify every single time you fly. (Think IMSAFE, cause it's what that is) Well gee! I don't know how much more "rock Solid you can get than originally posting the exact wording of the regulation.