Date & Time: 2015-12-21 15:31 Click：
Except for the major part of maintenance work, final test, certifying and releasing of maintenance, the maintenance organization may subcontract the specific part of maintenance work out within the approved scope of work as specified in the CAAC MOC, such as the specialized working processes, sub-part repairs, etc.
Unless approved as a specialized service organization in accordance with the national standards, the subcontractor to the domestic maintenance organization shall be issued with the CAAC MOC. The subcontractor to the foreign or regional maintenance organization shall be approved by the competent Civil Aviation Authority which has jurisdiction over the maintenance organization concerned.
The maintenance organization, which uses the subcontractors, shall make evaluate on the subcontracted maintenance work under the control of its quality system.