True or False: No rise of ITT within 10 seconds of fuel flow indications indicates a no start.

The statement that no rise of ITT (Interstage Turbine Temperature) within 10 seconds of fuel flow indications indicates a no start is true. In the context of jet engine operations, specifically regarding the T-6A aircraft, the presence of fuel flow without a corresponding rise in ITT suggests that the combustion process is not occurring. This lack of temperature increase signals that the engine has not ignited the fuel, which is a critical step in the normal starting sequence.

When starting an engine, a rise in ITT generally occurs shortly after fuel flow is established, as the fuel is ignited and the combustion process begins. If there is no ITT rise after 10 seconds, it indicates a failure in the start sequence, leading to a no start condition. This understanding is crucial for pilots in diagnosing and responding to engine start issues, helping to ensure safety and effective aircraft operation.

Other options might introduce additional conditions or dependencies, but they do not negate the fact that the absence of ITT rise within that critical time frame is a primary indicator of a no start scenario. Thus, the core principle remains that no rise in ITT indicates that the engine has not started successfully.