Which of the following does NOT indicate a cargo fire condition?

The scenario involves recognizing indicators of cargo fire conditions on the Embraer Regional Jet. The correct choice, which does not indicate a cargo fire condition, is related to the engine, specifically "ENG 2 FIRE." This term indicates that there is a fire detected in the second engine, which is separate from cargo compartments and indicates an entirely different area that requires attention.

In contrast, the other indications, such as "CRG FWD SMOKE" and "CRG AFT SMOKE," directly refer to smoke detection in the forward and aft cargo areas, respectively, suggesting potential fire conditions in those compartments. Additionally, "APU FIRE" pertains to the Auxiliary Power Unit and is indicative of a fire risk in that section of the aircraft.

Understanding these distinctions is critical for pilots and crew members, as it influences emergency response actions and prioritization in flight safety measures. The awareness of where the fire threat is originating helps in determining which systems to isolate or extinguish in a situation where multiple alerts may occur simultaneously.