Maximum Continuous EGT is which value?

• A. 925 C
• B. 935 C
• C. 915 C
• D. 945 C

Answer: (A)

The main idea here is understanding how engine temperature limits protect the turbine during operation. Exhaust Gas Temperature (EGT) is a direct indicator of turbine inlet temperature, and keeping it within specified limits prevents excessive thermal and mechanical stress on turbine blades and related components. There are different limits depending on how long you expect to operate at a given temperature. The maximum continuous EGT is the highest temperature that you can sustain indefinitely during normal, continuous operation without causing damage or accelerated wear.

For the CFM56-7B engines used on the P-8A, that continuous limit is 925 degrees Celsius. This means you can hold the engine at or below this temperature for extended periods without compromising engine life. Other numbers you might see, such as higher EGT values, are typically tied to takeoff or go-around conditions (short-duration limits) and are not meant to be held for extended periods. They exist to allow brief operations at higher temperatures during critical phases but require returning to the continuous limit promptly.

So, the value you can sustain continuously is 925 C.