What temperature triggers the amber DUCT TEMP annunciator?

The amber DUCT TEMP annunciator is designed to alert operators when the temperature within the ducting system reaches a critical level that could indicate a potential problem, such as overheating. The correct answer indicates that this alarm is triggered at 300°F. At this temperature, it serves as a warning to the crew to assess system performance and take necessary actions to prevent any possible damage or failure that could arise from excessive heat in the ducting.

In contrast, the other temperatures do not trigger the amber DUCT TEMP annunciator. This means that 250°F, 200°F, and 350°F do not meet the specific threshold for this alert, which is set at 300°F. Understanding this range is vital for maintaining system integrity and ensuring safety protocols are followed.