What is it ?
CPDLC stands for Controller-Pilot Data Link Communications.
With the increase of air traffic, frequencies become busier and busier. It is now a real challenge that pilots and controllers must face to ensure safety through communications.
The CPDLC System provides a text communication solution, allowing both the pilots and the ATCs to send requests, clearances and reports.
It is particularly useful over large area without radar control and bad VHF/HF coverage such as oceanic airspaces.
No more it is required to monitor frequencies over large enroute airspaces. And complex phraseology becomes as easy as reading.