What type of documentation is an Aircraft Logbook?

The Aircraft Logbook serves as a comprehensive hardbound record that meticulously details various aspects of an aircraft's operation, including equipment specifications, inspections, and component statuses. This documentation is essential for maintaining regulatory compliance and ensuring the aircraft's airworthiness.

The logbook is vital for pilots, maintenance personnel, and regulatory agencies as it tracks the history of the aircraft, including maintenance records, repairs, and modifications. It is a critical resource for understanding the condition and reliability of an aircraft over time, making it consequently necessary for safety assessments and operational readiness.

In contrast, other options highlight different types of records or databases that do not provide a complete and formal account of an aircraft's maintenance history or inspections. For instance, a digital record of flight hours may focus solely on operational metrics, while a temporary log or online database serves a more specific purpose related to maintenance personnel or parts tracking, respectively, and does not encapsulate the comprehensive historical overview that an Aircraft Logbook provides.