This course provides a comprehensive study of mechanical systems used in turbine- powered aircraft. It covers systems such as flight controls, landing gear, braking, hydraulic and pneumatic systems, and environmental control systems, with emphasis on their design, operation, and integration. Students develop an understanding of system functionality, performance, and typical failure modes, as well as maintenance and troubleshooting procedures. The course emphasizes the interpretation of technical documentation and adherence to safe maintenance practices, ensuring alignment with EASA Part- 66 Module 11 standards