Which document serves as proof of an aircraft's compliance with regulatory standards?

The Certificate of Airworthiness is crucial as it serves as formal proof that an aircraft meets all necessary regulatory and safety standards required for operation. This document indicates that the aircraft is in a condition for safe operation and complies with the relevant regulations established by aviation authorities. It is issued after thorough inspections and evaluations demonstrate the aircraft's capabilities and adherence to safety criteria.

In the context of aviation, the Certificate of Airworthiness is vital for maintaining public confidence in air travel and ensuring that only those aircraft deemed safe are allowed to operate. This certification process is integral to aviation safety management and ensures that all aircraft in operation meet stringent safety requirements.

Other documents mentioned, such as the Certificate of Registration, serve different purposes, such as documenting ownership, while Airworthiness Directives and Type Certificates indicate maintenance requirements and design standards, respectively, but do not themselves provide proof of an individual aircraft's current operational safety status. The Certificate of Airworthiness stands specifically as the endorsement that the aircraft can safely fly based on regulatory compliance.