What switchlight must be pressed to complete the transfer from tank 1 to tank 2?

To complete the transfer from tank 1 to tank 2, the appropriate switchlight to press is the 2 FILL. The process is designed to move fuel from tank 1 to tank 2, and the 2 FILL switchlight activates the fuel system to fill tank 2 with fuel from tank 1. This action ensures that the flow of fuel is directed correctly to the desired tank, facilitating a safe and effective transfer process.

In this context, it's essential to understand how the fuel system works to ensure that pilots can effectively manage fuel transfers during flight. The system operates with specific switchlights designated for fueling operations, and each switchlight serves a particular function related to fuel management.

Pressing the 2 FILL switchlight initiates the filling of tank 2, which is crucial for maintaining balance and optimal fuel levels in the aircraft. Therefore, recognizing the correct switchlight to use is vital for completing the transfer process accurately and ensuring proper aircraft performance.