Maximum Gross for Takeoff 18.1 kg (40.0 lbs)
Maximum Useful Load 12.0 kg (26.4 lbs)
Maximum Payload 9.1 kg (20.0 lbs)
Typical Standard Empty Weight 6.2 kg (13.6 lbs)
It is important to note, that as altitude and temperature increase, the density of the air decreases. Consequently, ALTA's thrust will decrease. The following table describes maximum gross weight limits with respect to altitude and temperature.