What does "serviceable" mean in terms of aircraft operation?

The term "serviceable" in the context of aircraft operation refers to an aircraft being in a condition that meets safety and regulatory standards for flight. This encompasses various factors, including the aircraft's mechanical integrity, compliance with maintenance schedules, and adherence to regulatory requirements set by aviation authorities. An aircraft that is deemed serviceable must ensure that all systems are functioning properly and that it is safe for operation.

While being fully equipped with all required instruments is certainly important, it is just one aspect of the overall condition of an aircraft. Similarly, having recently been flown and checked for issues may indicate a level of maintenance but doesn't guarantee compliance with all regulatory standards for flight. Additionally, being ready for passenger transport implies readiness for operation but does not encompass the broader definition of serviceability, which focuses primarily on the safety and regulatory conditions necessary for flight.