This article presents the most important aspects of the dynamic stability curves of the MU200 mast. These dynamic stability curves represent a great instrument which is used in order to determine the area in which the MU200 mast can operate in safe conditions. After the presentation of the theoretical aspects, the stability chart of the MU200 mast is analysed. Also, a new method for the study of the stability chart of MU200 mast is presented. The way this study is conducted can easily be applied to every mast used in the petroleum industry.