It was designed to comply with the US FAR 103 Ultralight Vehicles rules , including the category 's maximum empty weight of 254 lb ( 115 kg ) .
The Sidewinder is a copy of the Phantom X1 that was created by former Phantom Aeronautics employee Fred Bell .
Sidewinder was designed to comply with the US FAR 103 Ultralight Vehicles rules , including the category 's maximum empty weight of 254 lb ( 115 kg ) .
The Sidewinder is a copy of the Phantom X1 that was created by former Phantom Aeronautics employee Fred Bell .