Aircraft communication systems — Controller pilot datalink communication CPDC systems; High frequency HF radio communications systems; Ultra high frequency UHF radio communication systems; Very high frequency VHF radio communication systems
- 53-2011.00 Airline Pilots, Copilots, and Flight Engineers
Digital communications display units DCDU; High-frequency HF radio communication systems; On-board intercom systems; Ultra high frequency UHF radio communication systems
- 53-2012.00 Commercial Pilots
Digital communications display units DCDU; High frequency HF radio communication systems; On-board intercom systems; Ultra high frequency UHF radio communication systems
- 53-2031.00 Flight Attendants
Satellite aircraft communication systems
