What happens if the FADEC detects an overspeed condition?

When the FADEC (Full Authority Digital Engine Control) detects an overspeed condition, it has a critical function of ensuring engine safety and preventing damage. In the case of an overspeed, where the engine's rotational speed exceeds safe operational limits, the primary action taken is to automatically shut down the engine. This is a safety measure to prevent potential catastrophic engine failure or adverse consequences that could affect aircraft performance and safety.

The FADEC continuously monitors various parameters, including engine speed, temperature, and pressure. When an overspeed is detected, it can rapidly and precisely respond to mitigate risks, and an automatic shutdown is a direct and effective way to manage that situation.

While alerts and warnings to the pilot, reduction of engine output, or cooling procedures are important aspects of engine management, in the event of an overspeed, the immediate response from FADEC prioritizes engine shutdown to protect both the aircraft and crew. Thus, the action of automatically shutting down the engine ensures that the aircraft can continue its operation safely, either by switching to another engine or preparing for an emergency landing if necessary.