What is the maximum ITT during start for the ERJ 170/175?

The maximum Interstage Turbine Temperature (ITT) during start for the ERJ 170/175 is correctly identified as 800°C. This limit is critical to ensure the safe operation of the aircraft's engines. Exceeding this temperature during the start phase can lead to engine damage, affecting performance and safety.

The importance of adhering to the ITT limit lies in the thermal stresses and potential damage to engine components, such as turbine blades and other critical parts. By maintaining the ITT within the specified limits, operators can help preserve engine integrity and prolong the life of the engine systems.

Understanding this limitation is essential for pilots and maintenance personnel to ensure compliance with operating procedures and to mitigate risks associated with engine starts.