Flying ultralights is an exciting and exhilarating sport when
done safely.  Ultralights are regulated and defined in Federal
Aviation Regulations; FAR Part 103  An Ultralight is a single
seat vehicle, weights less than 254 pounds, 155 pounds max empty
weight, carries 5 gallons of fuel or less and is capable of
flying as slow as 24 knots and no faster than 55 knots. if the
aircraft has more than 1-seat or exceeds any of the above
criteria, It's not an ultralight.  No FAA pilot license or FAA
medical exam required to fly an ultralight. The ultralight does
not required to be maintained by an FAA certified mechanic.   An
ultralight can not be flown over any congested area of a city,
town or settlement, or over any open air assembly of persons.
The ultralight can't be used for any commercial purposes.  An
ultralight can only be operated during sunrise and sunset unless
equipped with anti-collision light extending flight time to
twilight periods, 30 minutes before sunrise and 30 minutes after
sunset  Even thought