FAA Powerplant Written Practice Test

What action should be taken if the leading edge of a turbine blade shows signs of over-temperature condition?

1. Monitor the engine performance

2. Replace the turbine blade

3. Serve as a warning to the pilot

4. Investigate further operational parameters

The correct answer is: Investigate further operational parameters

When the leading edge of a turbine blade exhibits signs of over-temperature, investigating further operational parameters is essential to understand the root cause of the issue and to ensure the engine's safe operation. Monitoring engine performance and assessing operational data can reveal additional critical information, such as engine RPM, fuel flow, and exhaust gas temperature. This deeper analysis helps to determine if the over-temperature condition is a transient event or indicative of a more serious problem, like cooling issues, fuel contaminants, or incorrect operational practices. By analyzing these parameters, maintenance personnel may identify factors that contributed to the over-temperature condition, guiding necessary corrective actions before proceeding with any operational changes or component replacements. This preventative approach helps to ensure the longevity and reliability of the engine while prioritizing safety.