A Component Maintenance Manual (CMM) is a formal document that details how to accomplish off-aircraft maintenance tasks on an aircraft component. The maintenance tasks contained in the CMM include the information required to check, repair, adjust, and test units or assemblies, and contain enough detail to return the component to a serviceable condition.

An Illustrated Parts List (IPL) is a list of parts associated with the subject component described in the CMM. It contains the data necessary to find and identify all parts of a component that can be disassembled for shop maintenance.