Which situation describes a "no start" during engine ignition?

In the context of engine ignition, a "no start" situation is characterized by the failure of the engine to initiate combustion, which is often indicated by the absence of a temperature rise in the Interstage Turbine Temperature (ITT) within a specified time frame, typically 10 seconds. When the ignition sequence begins, the ITT should show an increase as fuel is ignited and combustion begins. A lack of ITT rise suggests that the engine has not achieved the necessary conditions for ignition, indicating that a "no start" condition has occurred.

This situation is crucial for pilots and ground crews to recognize during an engine start sequence, as it may signal the need for troubleshooting or further maintenance to address the underlying cause of the failure to start. Monitoring ITT is a standard procedure during engine starts to ensure that the engine is functioning as expected.

The other choices, while they pertain to engine operation, do not accurately reflect the conditions that would define a "no start." For example, abnormal fuel flow indications might indicate fuel system issues but do not directly signify that ignition has not occurred. Similar reasoning applies to excessive thrust output and an immediate rise of N1; those conditions may indicate other operational states rather than a definitive "no start." Therefore, the