What is the primary function of pulling the MOR handle?

The primary function of pulling the MOR (Mandatory Override Release) handle is to manually separate the pilot from the seat and deploy the parachute. This action is crucial for ensuring the safety of the pilot in emergency situations, such as when the aircraft is experiencing critical failure or when a controlled landing is not possible. The MOR handle allows the pilot to exit the aircraft quickly, making it an essential safety feature in certain aviation contexts, particularly in military aviation where ejection systems are utilized.

The other options presented do not align with the primary function of the MOR handle, as they pertain to different systems or procedures within the aircraft. Activating the autopilot system is unrelated to the manual operation of the MOR handle, nor does the handle play a role in initiating emergency landing procedures or turning off the aircraft engines. Understanding the specific purpose of the MOR handle is vital for pilots and crew members, emphasizing the importance of effective emergency management in aviation.