I used to keep my UL at N41, privately owned open to the public. I have flown it into many airports including Bradly International and Stewart International airport. I got prior permission for those. An ultralight cannot have a passenger seat or more than 5 gals of gas. Also it is not supposed to weigh more than 254 lbs. FAR part 103 covers UL rules. Larger aircraft must fall into Light Sport category and must be registered. For a radio I had a handheld ICOM-22 with headset.
