What is the normal operating temperature for the engines?

The normal operating temperature for the engines of the ERJ 170/175 is set at 90°C. This temperature is important because it ensures optimal engine performance and efficiency. Engine temperatures that are maintained within the specified limits contribute to the longevity and reliability of the engine components, ultimately ensuring safety and performance during flight operations. Operating outside of these temperature parameters can lead to decreased engine efficiency and could potentially result in mechanical issues. Therefore, understanding and memorizing the correct operating temperature is crucial for pilots and maintenance personnel to ensure the aircraft operates within safe and effective limits.