Which item should be checked last in the checklist for low volts at high RPM?

In the context of responding to low voltage indications while operating an aircraft at a high RPM, the last action to be checked should be turning the master switch off. This is a crucial step because, if there is a persistent low voltage condition, simply reducing the electrical load or checking other items could still result in damage to the aircraft's electrical system or battery.

Turning the master switch off is typically an action taken to prevent further complications, such as potential damage to electrical components or the battery itself, which may occur if the situation is left unchecked. This is also a safety measure, allowing the pilot to isolate electrical systems and maintain control over the aircraft's functionality. It is important to do this after other critical checks to ensure that the aircraft can still be operated safely until the issue can be fully assessed and addressed.

Checking the battery amps and verifying that the low voltage annunciator is off provides useful diagnostic information, but addressing them should not delay the immediate need to disconnect the electrical system in the event of a significant issue. Reducing the electrical load can help alleviate the immediate problem, but if the situation remains unresolved, turning off the master is essential to prevent further complications. Therefore, it is logically last in the sequence of immediate actions to take for managing low voltage