If the starter remains ON after the engine reaches ground idle, what action should you take?

• A. Move the Engine Switch from RUN to OFF
• B. Leave the starter ON and retry the start
• C. Disconnect the battery
• D. Turn the key to START

Answer: (A)

The important idea is that the starter is only needed during starting, and it must be disengaged once the engine has reached idle. On the PC-12 NGX, if the starter remains ON after the engine reaches ground idle, you should move the Engine Switch from RUN to OFF. This cuts power to the starter motor, stopping it from running and preventing overheating or damage, while ignition remains available to the engine to continue running. Keeping the starter energized after start wastes electrical power and can overheat the starter, and attempting to start again while the engine is already running isn’t appropriate. Disconnecting the battery isn’t required in this scenario and could disrupt essential systems, and turning the key to START while the engine is already running can cause mechanical or electrical issues.