Abstract: It is a well-known fact about the degree of difficulty associated during the landing phase of an Aircraft. An efficient and a reliable auto-landing controller are therefore specially needed for auto landing purpose. A good number of parameters have to be controlled during the landing phase like the approach velocity, Heading, Heading offset, vertical velocity, flare, altitude, alignment of the aircraft etc., which makes the application of conventional controllers expensive for the purpose. This is precisely where fuzzy logic can be used. Using fuzzy sets and fuzzy set operation, it is possible to design a fuzzy reasoning system, which can act as a controller. Potentially, applications of such knowledge-based approach to controller design can result in efficiency, time and cost savings. The aircraft used in this project is a Personnel launching system (PLS) model given in the Aerosim adds in Matlab.