How is APU performance typically documented?

Documenting APU performance is typically achieved using flight logs and maintenance records due to the need for accurate and systematic tracking of operational data. Flight logs record detailed information related to each flight, such as engine performance, operational anomalies, and routine checks. Maintenance records complement this by providing insights into maintenance performed, service history, troubleshooting actions taken, and any parts replaced.

This documentation is essential for safety, compliance with regulatory standards, and ensuring efficient maintenance practices. It allows crews and maintenance personnel to make informed decisions regarding the APU's operational status and any necessary actions to keep the aircraft ready for service. Utilizing flight logs and maintenance records provides a structured and reliable way to capture data that is critical for long-term operational effectiveness and safety management.