How is the APU started in the C-130J?

The Auxiliary Power Unit (APU) in the C-130J is started using the APU control panel located in the cockpit. This panel allows the crew to control and monitor the APU's operation effectively from the cockpit, providing essential information such as APU EGT (Exhaust Gas Temperature) and fuel flow.

The design of the control panel enables a streamlined and efficient starting process, allowing for quick engagement of the APU to provide electrical power and bleed air when needed for aircraft systems, particularly during ground operations. Using the control panel ensures that any necessary safety procedures are followed, and it allows for real-time monitoring of the APU's performance during startup and operation.

While other methods like manual ignition or external power sources have their uses in various contexts, the C-130J specifically requires the use of the dedicated cockpit APU control for initiating the APU, emphasizing the aircraft's design for integrated systems management and operational efficiency.