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The information elements shown here are those used or provided by the
data link capabilities in determining how to address, send, and receive
messages, not those for the contents of the data link messages.
Contents:

Automatic Dependent Surveillance - Addressable (ADS-A)
This data link capability is expected to be available only in the oceanic
environment during the Free Flight Phase
1 (FFP1) time frame. Introduction into other domains and further enhancements
beyond the FFP1 time frame have yet to be determined.
To see other capabilities that use an information element, look up that
information element alphabetically by name. Top of Page

Controller Pilot Data Link Communications (CPDLC)
This data link capability is expected to be available only in the oceanic
environment during the Free Flight Phase
1 (FFP1) time frame. Domestic CPDLC will be introduced in the Free
Flight Phase 2 (FFP2) time frame. Further enhancements beyond
the FFP2 time frame have yet to be determined.
To see other capabilities that use an information element, look up that
information element alphabetically by name.
Additional information on CPDLC is available from the following sources:
- FAA's Aeronautical Data Link web
page
- Federal Aviation Administration, Operational Requirements for
the Aeronautical Data Link System, 5 December 1994, Washington,
DC
- Federal Aviation Administration, Requirements Document for En
Route Controller-Pilot Data Link Communications (CPDLC) Service, Builds
I & IA, 17 August 2000, Washington, DC
Top of Page

Definitions
- FFP1
- Free Flight Phase 1
- FFP2
- Free Flight Phase 2
- TBD
- to be determined
Top of Page

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