In aircraft operations, what does the late-arm switch specifically prevent?

The late-arm switch plays a crucial role in aircraft operations by preventing the arming of weapons before they are needed. This function is particularly important for maintaining safety and operational effectiveness. By ensuring that weapons are not armed until just prior to their intended use, the late-arm switch reduces the risk of accidental activation during sensitive phases of flight, such as takeoff or landing.

In combat situations or training exercises, it is vital to have control over weapon systems until the exact moment they are required. This level of control helps avoid unintentional engagements and ensures that weapon systems are only available when the pilot is ready to deploy them, thereby enhancing overall mission safety and success.