Which level of maintenance is referred to as Rework Maintenance?

Rework Maintenance is specifically associated with D-level maintenance, which involves performing extensive repairs and modifications on aircraft and other aeronautical systems. This level of maintenance typically takes place in specialized facilities and focuses on restoring equipment to a fully operational state, often involving disassembly, overhaul, and significant repairs beyond the capabilities of the O-level and I-level maintenance personnel.

D-level maintenance is crucial for ensuring that aircraft and systems remain safe and effective over their operational lifespan. It is not performed in the day-to-day operations or on-site, rather, it is done at dedicated repair facilities where the necessary tools and expertise are available to undertake comprehensive restoration tasks.

In contrast, O-level maintenance is often performed by the operating unit and includes a range of routine services and inspections. I-level maintenance serves as an intermediate support stage, encompassing more complex tasks than O-level but generally less extensive than those found in D-level maintenance. E-level maintenance is not a recognized category in the context of aviation maintenance levels. Thus, D-level is accurately characterized as Rework Maintenance due to its focus on significant repair and restoration work.