23 - Communications System
Sub-chapters
- 23-00 - General
- 23-10 - Hf/Speech Communication System
- 23-11 - Uhf Communication System
- 23-12 - Vhf Communication System
- 23-15 - Satcom
- 23-20 - Data Transmission and Automatic Calling
- 23-30 - Passenger Address, Entertainment and Comfort
- 23-40 - Interphone
- 23-50 - Audio Integrating
- 23-60 - Static Discharge System
- 23-70 - Audio and Video Monitoring
- 23-80 - Integrated Automatic Tuning
- 23-97 - Comm System Wiring