When starting a turbine engine, a hung start is indicated if

When starting a turbine engine, a hung start is indicated if

• A. The engine fails to reach idle RPM
• B. The engine reaches idle RPM
• C. The engine exceeds idle RPM immediately
• D. The engine requires more than 60 seconds to start

Answer: (A)

At start, the engine should rotate and then accelerate to a self-sustaining idle speed. A hung start is indicated when the engine fails to reach that idle RPM. This shows the start system isn’t delivering a light-off and stable idle, usually pointing to issues with ignition, fuel delivery, or a mechanical fault preventing acceleration. If the engine does reach idle, the start is not hung; scenarios where it overspeeds immediately or simply spends too long before starting describe other abnormal conditions, not a hung start.

At start, the engine should rotate and then accelerate to a self-sustaining idle speed. A hung start is indicated when the engine fails to reach that idle RPM. This shows the start system isn’t delivering a light-off and stable idle, usually pointing to issues with ignition, fuel delivery, or a mechanical fault preventing acceleration. If the engine does reach idle, the start is not hung; scenarios where it overspeeds immediately or simply spends too long before starting describe other abnormal conditions, not a hung start.