Aeronautical communication specialist SITA has conducted the first ACARS datalink message exchanges using the latest generation air-ground VHF data communication technology - VHF digital link (VDL) mode 2.
The tests are early steps towards implementing a global digital communications network to replace the analogue ACARS, which can no longer meet traffic demand.
The tests, conducted earlier this month, involved the use of Rockwell Collins avionics and a VHF ground station developed by Harris. A series of standard ACARS data link messages were successfully transmitted and received by airborne and ground-based systems.
SITA's VDL Mode 2 service, dubbed VDL Aircom, is set for launch mid-next year. The move to VDL is vital in order to support the growing airline operational communications traffic. VDL Mode 2 will form an important part of the aeronautical telecommunications network, which has been adopted by the International Civil Aviation Organisation to support air traffic services datalink applications.
Source: Flight International
