What is the minimum required personnel to operate the APU?

The minimum required personnel to operate the APU effectively is typically two. This staffing ensures that one person can manage the operational aspects of the APU while the other can oversee safety protocols and monitor for any potential issues that may arise during operation. In military aircraft operations like that of the C-130J, ensuring a proper level of personnel is crucial for maintaining operational readiness and safety. The dual presence allows for immediate communication and action if troubleshooting is necessary or if any emergencies occur while the APU is in use, which enhances safety and efficiency during ground operations.