Data Link Systems
December 12, 2014
Chairman: Bob Slaughter - American Airlines
APIM 13-013: Supplement 8 to ARINC Report 618: Air/Ground Character-Oriented Protocol Specification (pdf, 50K)
APIM 10-013: Supplements 7 to ARINC Specification 631 – VHF Digital Link (VDL) Mode
2 Implementation Provisions (pdf, 24K)
APIM 09-001A: Media Independent Aircraft Messaging (MIAM) ARINC 841 Update, Supplement 1 and 2 (pdf, 90K)
Goal: The goal of the Data Link (DLK) Systems Subcommittee is to develop and maintain a set of ARINC Standards that promote reliable, uniform, and cost efficient transfer of data between the aircraft and various locations on the ground. These ARINC Standards cover the existing Aircraft Communications Addressing and Reporting System (ACARS®) and the emerging Aeronautical Telecommunications Network (ATN) as defined by the ICAO SARPs. Ground locations include civil aviation agencies, manufacturers of avionics and engines, data link service providers, weather providers, and departments within the airlines such as payroll, maintenance, operations, engineering, and dispatch.
Project: Develop standards to support ACARS, VDL Mode 2 and ATN
Scope: VDL Mode 2 (VDLM2) is a bit-oriented air-ground subnetwork implemented in accordance with the ATN SARPs. ARINC Specification 631 has been developed to describe the functional implementation of VDLM2.
Benefit: The development of ARINC Standards for VDL Mode 2 and ATN-compatible data link avionics will allow the airlines to procure common avionics from multiple vendors. These standards will ensure interchangeability and interoperability of these avionics components.
Circulation Prior to Adoption Action
Draft 3 of Supplement 8 to ARINC Specification 620: DataLink Ground System Standard and Interface Specification (DGSS/IS)
Draft 4 of Supplement 7 to ARINC Specification 631: VHF Digital Link (VDL) Mode 2 Implementation Provisions
Last Meeting Report:
Data Link (DLK) Systems Subcommittee
June 17-19, 2014, in Brussels, Belgium
Media Independent Aircraft Messages
December 12, 2014
Goal: To develop a new protocol that will allow avionics systems to exchange large (3 MByte) ACARS messages over broadband subnets (Inmarsat SwiftBroadband, IP, etc).While optimally these messages will transit IP links, these larger messages could also transit over VDL Mode 2 or traditional ACARS subnetworks under certain conditions. While proprietary solutions exist to handle the exchange of large volumes of data on ACARS, standardization will:
- Avoid proliferation of proprietary solutions.
- Focus on ACARS performance and efficient RF spectrum utilization.
The definition of MIAM protocol would allow significant extension of ACARS capacities, thus extending the life of ACARS and bringing additional benefits to ACARS users at a small expense.