What does CDL stand for in aviation terminology related to airworthiness?

CDL, in aviation terminology, stands for Configuration Deviation List. This document is crucial in the context of airworthiness as it outlines permissible deviations from the approved aircraft configuration. For instance, if certain parts of an aircraft are not functioning or are removed for structural reasons, the CDL specifies how this affects the aircraft's operational capabilities and safety standards.

The primary purpose of the Configuration Deviation List is to ensure that even with these deviations, the aircraft remains safe to operate. It allows for flexibility while maintaining compliance with safety regulations and standards, thereby ensuring airworthiness. Operators can reference the CDL to understand how specific alterations might impact performance and to confirm that they are operating within allowable limits during flight.

In contrast, the other options, while they may sound plausible, do not accurately represent the function or terminology used in aviation for referencing airworthiness. Configuration Deviation List is the term specifically recognized in regulatory documentation and operational procedures pertaining to aircraft safety and airworthiness assessments.