What is the primary purpose of the X-TK (Cross Tank) system?

The primary purpose of the X-TK (Cross Tank) system is to initiate fuel transfer between tanks. This system plays a crucial role in managing fuel distribution across the aircraft, ensuring that fuel can be moved as needed to maintain proper balance and support the aircraft's operational efficiency.

By allowing fuel to transfer between tanks, the X-TK system helps to optimize the aircraft's center of gravity, which is vital for stable flight and efficient performance. Proper fuel distribution can also be important for range, fuel consumption, and overall safety during various phases of flight.

While other systems may address fuel quality, tank balancing, or filtering contaminants, the specific function of the X-TK system is directly related to transferring fuel rather than monitoring or filtering. Understanding this distinct role clarifies its importance in the overall fuel management strategy of the aircraft.