Which temperature range is considered transient during engine ITT after starting?

• A. 980 C to 1090 C
• B. 860 C
• C. 755 C to 810 C
• D. 810 C

Answer: (A)

The transient temperature range for engine Interstage Turbine Temperature (ITT) after starting is critical for ensuring proper engine operation and performance monitoring. The range of 980 °C to 1090 °C is identified as transient because it represents a period where the engine is undergoing various changes in temperature due to the start sequence. During this phase, it is normal for the engine to experience fluctuating temperatures as the components heat up and stabilize.

Maintaining awareness of this transient range is important for pilots and maintenance crews because exceeding this range can signal potential issues or lead to engine damage. Thus, the range of 980 °C to 1090 °C provides vital information for monitoring engine performance during the critical startup phase, indicating that, while operating in this range is allowable, it should be approached with caution.

Understanding these limits aids in making informed decisions during operation, ensuring that the engine runs within safe parameters and thus enhancing overall flight safety.