What is the function of the RAT RESET switch?

The function of the RAT (Ram Air Turbine) RESET switch is specifically designed to reset the RAT generator after it has been disconnected due to an overcurrent situation. When the RAT is deployed, it generates electrical power for the aircraft's systems in cases of a dual engine failure. If the generator experiences an overcurrent condition—meaning it is trying to provide more current than it can safely handle—it will automatically disconnect to protect itself from damage. The RAT RESET switch allows the flight crew to reset the generator once the overcurrent condition is resolved, enabling it to function again without needing manual intervention to restore power.

This understanding is crucial for pilots and maintenance personnel since the RAT is a critical component for ensuring electrical power is maintained during emergency situations. Recognizing the importance of the reset function allows for better management of power resources and ensures the safety of the aircraft in flight.