What is the primary function of the emergency landing gear extension handle?

The primary function of the emergency landing gear extension handle is to activate the emergency system for extending the landing gear. When the landing gear cannot be lowered using the normal hydraulic system—due to a failure or malfunction—pulling this handle allows pilots to manually extend the landing gear. This action typically involves redirecting the hydraulic pressure or mechanisms designed specifically for emergency scenarios, ensuring that the aircraft can safely land.

While other functions related to landing gear exist, such as releasing locks or charging systems, they do not encompass the primary purpose of the emergency landing gear extension handle in the context of ensuring safe aircraft operation in an emergency. The handle is specifically designed to enable the gear to deploy when regular systems are compromised.