What is the difference between CPDLC and ACARS?
CPDLC addresses the capacity limits of voice communications in designated European airspace, providing controller and pilots an air / ground data link. ACARS facilitates communication between flight crew and ground based operations, in all phases of flight. CPDLC & ACARS in one box saves cost and installation space. PDC is Pre Departure Clearance and CPDLC is Controller Pilot Data Link Communications. CPDLC is not a clearance type. It’s simply a system that allows text based communication between an aircraft and air traffic control.You’ll need to update your avionics suite to enable the CPDLC functionality to use the system. One other thing you’ll need on your aircraft is a VDL Mode 2 VHR Radio and/or an iridium data transceiver. The VDL Mode 2 VHF is used over land and the iridium data transceiver is utilized in remote and oceanic airspace.CPDLC is a two-way data-link system by which controllers can transmit non urgent ‘strategic messages to an aircraft as an alternative to voice communications. The message is displayed on a flight deck visual display. The CPDLC application provides air-ground data communication for the ATC service.CPDLC (Controller–Pilot Data Link Communications). Both operate over VHF, HF, or satellite networks, but each system has a different operational purpose and user group.In the two application layers, there are ATS protocols such as Oceanic and Departure Clearance, as well as the FANS protocols ADS-C and CPDLC. All these protocols are transmitted over the Aircraft Communications Addressing and Reporting System (ACARS), which is used in most regions of the world. While they serve distinct operational functions—ACARS for airline operations and CPDLC for ATC communications—together, they form a key part of the digital infrastructure that underpins contemporary air traffic management.
What is ads c in aviation?
Automatic dependent surveillance – contract (ADS-C) uses the same systems on board the aircraft to automatically transmit similar information – aircraft position, altitude, speed, elements of navigational intent and meteorological data – only to one or more specific Air Traffic Services Unit (ATSU) or AOC [1] . ADS-B messages are broadcasted directly by the airplane, whereas ADS-C information are provided also via satellite link, but only to the Air Traffic Service (ATS).