What is the maximum transient ITT?

The maximum transient Interstage Turbine Temperature (ITT) for the King Air 350 is indeed 850°C for a duration of 20 seconds. This limitation is crucial for maintaining the integrity and performance of the engine during transient conditions, such as takeoff or when experiencing a rapid increase in power. Exceeding this limit could potentially lead to thermal damage or failure of the engine components, affecting overall safety and reliability.

Transient temperatures are designed to accommodate brief operational spikes, but they are strictly time-limited to mitigate any adverse effects on the engine. It's important for pilots and operators to understand these limitations, as they dictate safe operational procedures and maintenance schedules. Knowing the correct maximum transient ITT ensures adherence to safety protocols and prolongs engine life.