The Despatch Deviation Guide (DDG) serves as a resource for operators and maintenance teams. It helps them understand how to manage aircraft in nonstandard configurations allowed by the Minimum Equipment List (MEL) and Configuration Deviation List (CDL). The DDG is an essential document that addresses all aspects of aircraft airworthiness.
The MEL focuses on equipment failures, like inoperative packs or altimeters, detailing the minimum equipment needed for departure. On the other hand, the CDL pertains to physical components of the aircraft’s structure, such as service panels and flap seals. It guides crews on how much they can deviate from a fully equipped airframe before takeoff.
If the CDL does not mention a specific missing part, then that deviation is not permitted. In such cases, the aircraft cannot depart until repairs are made. Understanding these categories is crucial for safe operations.
