Can the APU provide power during an emergency?

The auxiliary power unit (APU) on the C-130J can provide power during ground operations in emergency situations. The APU serves as a critical power source when the main engines are not running or in cases where additional power is required for ground support functions, such as lighting, environmental control systems, or electrical needs. In an emergency on the ground, having access to the APU allows crews to maintain essential systems and functions, thus enhancing safety and operational capability.

Using an APU for ground operations during emergencies is particularly advantageous, as it ensures that the aircraft remains functional and can support operations or provide necessary services until the situation is resolved or the aircraft can be moved safely. The other options do not accurately reflect the APU's capabilities in emergency scenarios.