What should you do if the starter fails to drop off?

What should you do if the starter fails to drop off?

• A. Push forward on the PCL
• B. Wait for 30 seconds
• C. Pull down on the PCL
• D. Feather and re-engage the start cycle

Answer: (C)

The action centers on how the PCL controls the start circuit. When you attempt a start, the starter is energized through the PCL and is supposed to drop off automatically once the engine reaches a sufficient speed. If the starter does not drop off, manually pulling the PCL down to the idle/off position interrupts the start circuit and causes the starter to disengage. This prevents the starter from remaining energized and overheating. After the starter drops off, you can reselect the start cycle as needed or proceed with normal operation. Feathers and re-engaging the start cycle aren’t the appropriate step for this turboshaft start fault.

The action centers on how the PCL controls the start circuit. When you attempt a start, the starter is energized through the PCL and is supposed to drop off automatically once the engine reaches a sufficient speed. If the starter does not drop off, manually pulling the PCL down to the idle/off position interrupts the start circuit and causes the starter to disengage. This prevents the starter from remaining energized and overheating. After the starter drops off, you can reselect the start cycle as needed or proceed with normal operation. Feathers and re-engaging the start cycle aren’t the appropriate step for this turboshaft start fault.