Aircraft landing gear is a unique subsystem which is actuated to land the airframe without a depredation to the airframe. The critical parts of the landing gear shock strut are inner metal tube as piston, cylinder and tapered rod assembly. A suspension system or shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. This work aims at understanding to improve the performance characteristics of modified oleo strut shock absorber for lighter aircraft application. The usage of solid spring and lever bungee type shock strut in lighter aircraft offers relatively poor shock performance.