When an Airworthiness Directive has something of substance changed, what term is used to describe it?

The term "Revised" is used to describe a situation where an Airworthiness Directive (AD) has undergone a substantive change. In the context of aviation, a revision indicates that there have been significant updates or alterations to the information or requirements originally outlined in the AD. This is important because it signals to aircraft operators and maintenance personnel that they need to review and comply with the new or changed requirements to maintain the continued airworthiness of their aircraft.

Revisions are often necessary due to findings from continued evaluations, safety concerns, or new data that may affect the airworthiness level of the aircraft or its components. Adhering to revised directives ensures that safety measures are kept up to date and reflects the latest safety standards set by aviation authorities.

Understanding the terminology used in aviation regulations is crucial because it maintains clarity among operators and ensures safety compliance in the management of aircraft maintenance and airworthiness standards.