This service is designed to assist customers who need additional engineering information during maintenance and repair work. Customers can submit requests to COMAC, and after analysis and assessment, COMAC may provide the corresponding engineering drawings to help the customer carry out their tasks.

The service content includes:
- Service request handling
- Engineering information analysis and assessment
- Integration of drawing information
- Drawing conversion and tracking

The goal of the service is to support customers in their maintenance and repair activities.

Customers benefit by receiving engineering drawings as temporary supplements to technical publications and other customer service products, ensuring timely completion of maintenance and repair work.

The service is available to aircraft operators, with support typically provided remotely. In special cases, the support location can be determined based on the customer’s specific needs.