seaplanes Maximum speed in level flight: 120 kn CAS Maximum stall speed: 45 kn CAS Maximum seats: two Maximum engines: one (reciprocating engine only) Propeller: fixed-pitch or ground adjustable Cabin: unpressurized Landing gear: fixed (except for seaplanes) Other requirements： Designed, manufactured, and quality assured by manufacturer and complied to ASTM standards of LSA. See also Canadian advanced ultralight aircraft List of ultralight helicopters References United States sport aircraft