Is the statement true or false: During APU start, the right battery is isolated from the aircraft system and powers the APU starter?

The statement is true because during the start of the Auxiliary Power Unit (APU), the right battery is indeed isolated from the aircraft’s main electrical systems and is solely dedicated to powering the APU starter. This ensures that the starting process has a reliable source of energy without interference or draw from the aircraft’s other systems, which could lead to insufficient power levels or unwanted electrical loads affecting the starting process. Isolating the right battery specifically for APU starting tasks is a standard practice, as it helps in ensuring that all the necessary power is available for a successful start.

In scenarios where other options might suggest a different interpretation, they do not reflect how APU operation is typically managed during the start phase in aviation. The specific isolation of the right battery accentuates its role in ensuring that the APU starts efficiently without being affected by the operational state of the rest of the aircraft systems.