Customer service documents include Service Bulletins (SB), Service Letters (SL), Operator Information Communications (OIC), and Fleet Technical Activity Reports (FTAR).

- Service Bulletin (SB) is a document issued by the manufacturer to improve the reliability, safety, maintainability, and performance of the aircraft product.
- Service Letter (SL) is a letter issued by the manufacturer that provides general or specific information regarding the maintenance of aircraft systems and components.
- Operator Information Communication (OIC) is a method of quick communication between the manufacturer and the operator, informing the operator about significant in-service events and reminding them of important information.
- Fleet Technical Activity Report (FTAR) provides comprehensive information and updates on the progress of improvement plans related to specific technical issues or events for all operators.

The service is provided through the CIS platform.

The service content includes publishing customer service documents to operators via the CIS platform.

The goal of this service is to assist operators in the safe and smooth operation of their aircraft.

Customers benefit by improving fleet safety, reliability, maintainability, and overall performance.