Quality Certificates are a proof that a company is maintaining a quality management system in accordance with the customers' requirments and the aeronautical regulation. These approvals are issued by the Airworthiness Authorities like EASA or FAA, but also directly by customers or by an accredited Quality Certification Organism based on international quality standards.

Airworthiness Approval Tags are necessary for the delivery of new, repaired, and maintained aeronautical equipment to aircraft manufacturers and airlines. They certify that the equipment has been produced in conformity with approved data and could be fitted directly to an aircraft. Only approved organizations have the privilege to issue Airworthiness Tags.