If temperatures reach or exceed the preset fire warning point on the exterior of the engine, what occurs?

When temperatures exceed the preset fire warning point on the exterior of the engine, the warning system is activated to alert the pilot of a potential fire condition. This activation triggers the MASTER WARN light and the FIRE switch lights to illuminate. The MASTER WARN light indicates that there is an urgent warning that requires the pilot's attention, while the illumination of the FIRE switch lights specifically signals that a fire condition has been detected in the engine compartment.

Understanding this mechanism is crucial for flight safety, as it prompts timely action from the pilot to address the potential fire risk. The response to this warning is vital for managing engine safety and preventing further escalation of a hazardous situation.