The design of an appropriated landing gear is one of important requirements in aircraft system. In this paper, the landing gear model is shaped to two various models, and two approaches of used loads on the top surfaces of each model are preliminarily simulated by a 3D finite element analysis (ABAQUS) for analyzing these landing gears. Different simulations of tested conditions have been considered for both models, as well as the safety factor of each model is calculated for every tested condition. A conclusion is drawing about a better geometry to serve its future purposes.