What is the maximum takeoff ITT allowed for the aircraft?

The maximum takeoff ITT (Interstage Turbine Temperature) allowed for the aircraft is set at 850ºC for a duration of 5 minutes. This specification is critical for ensuring the engine operates within safe thermal limits during takeoff, which is typically one of the most demanding phases of flight in terms of engine performance.

Operating the engine within these temperature limits helps prevent damage to sensitive components, ensures optimal performance, and promotes safety. Exceeding this limit can lead to premature engine wear or failure, making adherence to the specified limits vital for effective engine management and overall operational safety.

Comparatively, other options propose far higher temperatures or very brief time durations that are likely to result in damage, which would not be suitable for long-term aircraft reliability and safety. Additionally, an ITT of 150ºC does not pertain to takeoff conditions, further affirming the appropriateness of the correct choice.