If the starter remains ON after start, what is the correct procedure?

• A. Move the Engine Switch from RUN to OFF
• B. Leave it ON and retry the start
• C. Disconnect the battery
• D. Engage the avionics master

Answer: (A)

The situation tests how to handle an abnormal starter condition during a turboprop start. The starter is only intended to operate briefly to light off the engine, then be disengaged so the engine can run on its own power. If the starter remains energized after the engine has started, continue to provide power to the starter can cause unnecessary wear or damage, and it can waste electrical power.

Turning the Engine Switch from RUN to OFF stops the starter circuit, interrupting current to the starter and allowing the engine to continue running without the starter. After you do that, verify the engine is in stable operation by checking speed, temperatures, and fuel flow, and proceed with normal procedures.

Leaving it ON and retrying would force the starter to try again while the engine is already running, which is not correct. Disconnecting the battery would disable essential systems and is unnecessary. Engaging the avionics master doesn’t affect the starter issue.