What must be done for emergency operation after an automatic shutdown of the APU?

For emergency operations following an automatic shutdown of the Auxiliary Power Unit (APU), it is crucial to override the automatic shutdown logic. By pushing the AUTO SHT DN ORIDE button, you effectively disable the automatic shutdown protections, which allows the APU to continue running despite the conditions that may have caused the shutdown. This enables the pilot to maintain essential electrical and hydraulic power needed for critical flight operations or to troubleshoot the issue. The ability to override the automatic shutdown is essential during emergencies, as it provides the necessary flexibility to manage the aircraft systems under less than ideal conditions.

While other options might seem relevant to managing fuel, starting procedures, or alert functions in normal operations, they do not address the immediate need to keep the APU operational following an automatic shutdown. Prioritizing the APU's functionality via the override ensures that the crew can maintain control and operate effectively during emergency scenarios.