Which of the following indicates that an inspection is necessary for a turbine engine?

An inspection for a turbine engine is warranted when there are indications of excessive exhaust gas temperatures. High exhaust gas temperatures can signify several underlying issues, such as fuel management problems, airflow restrictions, or even potential mechanical failures within the engine components. Monitoring the temperature provides valuable insight into the engine's performance and health, making it a critical parameter in ensuring safe and efficient operation. If temperatures exceed the specified limits, it can lead to damage if not addressed promptly.

In contrast, normal operating history, routine operational procedures, and cold start conditions typically do not trigger a need for inspection. A normal operating history suggests the engine is functioning within expected parameters, routine operational procedures are standard practices aimed at maintaining safety and efficiency, and cold start conditions generally refer to starting the engine after it has been off for a period, which is normal and does not necessarily indicate a problem unless accompanied by other symptoms.