Final answer:
A fault light on the ENG panel indicates a problem or malfunction with the engine, which requires immediate attention to ensure safe operation of the aircraft.
Step-by-step explanation:
A fault light on the ENG panel indicates that there is a problem or malfunction with the engine. It serves as a warning to the pilot or technician that there is an issue that needs attention.
For example, if the fault light is illuminated, it could mean that there is a loss of oil pressure, a fuel system issue, or an overheating engine.
In such cases, it is important for the pilot or technician to take appropriate steps to address the problem and ensure the safe operation of the aircraft.