When experiencing a flameout, which annunciators are likely to illuminate?

When a flameout occurs, certain annunciators are designed to alert the pilot to the critical conditions resulting from the loss of engine power. The illumination of the GEN (Generator), FUEL PX (Fuel Pressure), OIL PX (Oil Pressure), and OBOGS FAIL (On-Board Oxygen Generation System Failure) annunciators is significant because each of these systems is directly impacted during a flameout situation.

The GEN annunciator lights up when there is a failure in the electrical generating system, which can occur when the engine fails to produce power. Similarly, the FUEL PX annunciator indicates a drop in fuel pressure, a situation that may arise due to fuel system issues connected to the engine failure. The OIL PX annunciator indicates low oil pressure in the engine, which may happen as a consequence of the engine flameout. Lastly, the illumination of the OBOGS FAIL alert signals a potential issue with oxygen supply, which can become critical if the engine is not generating power to operate necessary systems.

Understanding how these systems are affected during a flameout is vital for pilots to quickly diagnose the situation and respond appropriately.