But it said this in the first link about primary training: ". In addition, the empty weight limit for low mass, high drag aircraft eligible for ultralight training has been raised to 650 pounds. The guidance will also extend LODA eligibility to most designs with a maximum cruise speed of less than 87 knots, expanding the list of aircraft available for light-sport primary training." The Avid Amphibian will be less than 650 pounds. Also a seaplane.