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Data Link Systems Subcommittee

Last Update: October 2, 2015

Chairman: Bob Slaughter - American Airlines

APIM 13-013: Supplement 8 to ARINC Report 618: Air/Ground Character-Oriented Protocol Specification (pdf, 50K)
APIM 10-013A: Supplement 7 to ARINC 631 VDL-2 Implementation Provisions (pdf, 51K)
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.

Current Drafts:

Draft 2 of Supplement 8 to ARINC Specification 618: Air/Ground Character-Oriented Protocol Specification

Draft 5 of Supplement 7 to ARINC Specification 631: VHF Digital Link (VDL) Mode 2 Implementation Provisions

Meeting Announcement:

Datalink (DLK) Systems Subcommittee (pdf, 240K)
November 10-11, 2015, in Cocoa Beach, Florida
sub bulletRegister On Line

Working Papers:

Last Meeting Report:

Data Link (DLK) Systems Subcommittee
June 9-11, 2015, in Blagnac, France
sub bulletAssociated Handouts

Media Independent Aircraft Messages

Last Update: October 2, 2015

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.

Current Drafts:

Draft 1 of Supplement 3 to ARINC Specification 841: Media Independent Aircraft Messaging (MIAM)

Staff Contact

Jose Godoy