NANCHANG CJ-6A — Systems Description

This document provides a detailed description of the pneumatic system of the Nanchang CJ-6A aircraft, including its components and troubleshooting tips. It serves as a supplement to the CJ Maintenance Manuals, helping users understand the system's operation and maintenance requirements.

• The CJ-6A pneumatic system operates various functions typically managed by electric-hydraulic systems in Western aircraft.
• Key functions include engine starting, wheel braking, flap actuation, and gear retraction/extension.
• Air pressure is supplied from an external fill point or the main air bottle.
• The system includes multiple check valves to prevent backflow and isolate circuits.
• Maintenance of check valves is necessary to ensure system reliability.
• The main air bottle is located mid-ship on the starboard side, while the emergency bottle is on the port side.
• The system features a ground service port for external air filling.
• Flexible hoses are used for brakes and flaps, requiring regular inspection.