The new sport class:. The FAA is increasing the weight limitation of the light-sport aircraft from the proposed 1,232 pounds (560 kilograms) to 1,320 pounds (600 kilograms). The originally proposed weight limitation was based on the 1,200-pound weight limitation proposed by the ARAC’s light-sport aircraft working group. The FAA agrees that there may be a safety benefit to light-sport aircraft designs to include provisions for currently produced type-certificated four-stroke engines