What is the main function of the aft cockpit canopy ejection handle?

The main function of the aft cockpit canopy ejection handle is to initiate ejection. This is a critical safety feature in the Super Hornet, as it allows the pilot to safely escape the aircraft in the event of an emergency. The ejection process involves the canopy being jettisoned before the seat is propelled from the aircraft, ensuring that the pilot has a clear path to exit. This functionality is essential for survival in dangerous situations, such as in-flight emergencies or aircraft malfunctions.

The other functions listed, such as retracting the canopy, unlocking the cockpit, or securing the cockpit, do not pertain to the operation of the ejection handle. The ejection handle specifically serves the safety mechanism of ejection, which is a vital component of military operations where quick response is necessary.