What warning indicators might light up during an engine failure?

The MASTER WARN lights and tones serve as the primary alert systems for the pilot in the event of critical situations, such as engine failure. When an engine failure occurs, the aircraft's systems are designed to immediately indicate an adverse condition requiring the pilot's attention. The illumination of the MASTER WARN lights, accompanied by an audible warning tone, is a clear and unmistakable signal that prompts the pilot to assess the aircraft's status and take appropriate action.

In contrast, flickering cabin lights do not provide pertinent information about the engine's operational status and are often unrelated to engine performance issues. Additional fuel flow indicators may be misleading as they could imply a potential fuel issue rather than a failure of the engine itself. Similarly, a decrease in engine temperature would typically not be an immediate indicator of engine failure; rather, it might indicate an operational parameter that is irrelevant during a sudden failure. Hence, the MASTER WARN system is crucial for cockpit situational awareness and safety in the event of engine failure.