The APU EGT Green range ends at what temperature?

The APU EGT Green range ends at what temperature?

• A. 806C
• B. 807C
• C. 1038C
• D. 0C

Answer: (A)

The green range on the APU EGT gauge represents normal, safe operation. The upper limit of that green band is the temperature beyond which operation is no longer considered normal. For this aircraft, that limit is 806 degrees Celsius. Keeping the EGT at or below 806 C ensures the APU stays within its designed thermal margins. If the EGT rises above that, you move into caution or red zones, which indicates you should take appropriate action to avoid damage. The other numbers don’t represent the normal green-end value: 0 C isn’t a realistic operating EGT, and values well above 806 C exceed normal limits, while 807 C would be just beyond the green range.

The green range on the APU EGT gauge represents normal, safe operation. The upper limit of that green band is the temperature beyond which operation is no longer considered normal. For this aircraft, that limit is 806 degrees Celsius. Keeping the EGT at or below 806 C ensures the APU stays within its designed thermal margins. If the EGT rises above that, you move into caution or red zones, which indicates you should take appropriate action to avoid damage. The other numbers don’t represent the normal green-end value: 0 C isn’t a realistic operating EGT, and values well above 806 C exceed normal limits, while 807 C would be just beyond the green range.