CS ACNS.B.DLS.B1.015 Dual Data Link
Capabilities (Dual stack)
ED Decision 2013/031/R
(See AMC1 ACNS.B.DLS.B1.015)
For aircraft integrating both FANS 1/A and ATN B1 CPDLC applications:
(a) Control and display: Messages with the same intent that are transmitted or received through these technologies are displayed in the same way.
(b) Alerting: Where a common alerting is not demonstrable, a mean is provided to distinguish between the alerting scheme in a format that is easy to comprehend.