scope:

The scope of this document is the ATS applications that support the following air traffic services (ATS):

a) Context Management (CM) service: 1) Data Link Initiation Capability (DLIC);

b) Controller-Pilot Data Link Communication (CPDLC) services:

1) Air Traffic Control (ATC) Communication Management (ACM);

2) Clearance Request and Delivery (CRD);

3) ATC Microphone Check (AMC);

4) Departure Clearance (DCL);

5) Data Link Taxi (D-TAXI);

6) In-Trail Procedures (ITP); and

7) Oceanic Clearance Service (OCL);

c) Automatic Dependent Surveillance - Contract Mode (ADS-C) service:

1) Position Reporting (PR);

d) Combined services (CPDLC and ADS-C):

1) Information Exchange and Reporting (IER);

2) 4-Dimensional Trajectory Data Link (4DTRAD);

3) Dynamic Required Navigation Performance (DRNP); and

4) Interval Management (IM).

These ATS services supported by data communications are described in section 4 to the extent necessary to establish the INTEROP for the application functions needed to support them. The detailed specification of the ATS services can be found in the Baseline 2 SPR, ED-228A/DO-350A [10], Section 3, ATS Services

Purpose

The purpose of this document is to define the set of requirements for the interoperability aspects of Baseline 2 data link systems. This document addresses ATN systems but would need to be amended to address other types of data link. This document is intended for use in conjunction with a consistent SPR standard, other INTEROP standards, and the guidelines described in ED-78A/DO-264 [7] for each approval type associated with the elements of the CNS/ATM system.