Systems and methods for managing non-integrated cpdlc systems from a first cpdlc system

A system for implementing a non-integrated FANS/ATN controller pilot data link communications (CPDLC) solution, the system comprising:

• a first one or more execution partitions executing an ATN CPDLC application;
• a second one or more execution partitions in communication with the first one or more execution partitions, the second one or more execution partitions executing a FANS CPDLC application, wherein the first one or more execution partitions are configured to implement a datalink router for interfacing between the ATN and FANS CPDLC applications and one or more radio transceivers;
• one or more Human Machine Interfaces (HMIs) in communication with the first execution partition and the second execution partition, the one or more HMIs configured to display screens generated by the ATN CPDLC application and configured to display screens generated by the FANS CPDLC application;
• and
• wherein the first one or more execution partitions includes a gatekeeper module that monitors messages in the datalink router corresponding to the FANS CPDLC application and causes downlink and uplink messages corresponding to the FANS CPDLC application to be discarded when the ATN CPDLC application is logged on, or attempting to establish, a current data authority (CDA) air traffic control (ATC) connection, and wherein the gatekeeper module is configured to allow uplink and downlink messages corresponding to the FANS CPDLC application to pass through the datalink router when the ATN CPDLC application is not logged-on to, or attempting to establish, a CDA ATN connection.