Abstract: Aiming at the phenomenon of right avertence when the acircraft taxiing on the ground, the fault tree of the taxiing right avertence has been established to analyze and locate the fault, and the causes are determined by experiments. The analysis shows that the left anti-skid brake failure and the left wheel brake failure occur due to the cable plug crimping wire breaking off and virtual connection, resulting in right avertence fault when the acircraft taxiing on the ground. Finally, suggestions and improvement measures in maintenance are put forward according to the fault cause analysis.