Please note: This use case originates from the predecessor project PJ.10-W2-73 FCA as part of the SESAR2020 Programme and is not considered in the current project.
This Use Case describes the actions to be taken in Wide Area Communication over VHF in FCA to establish air-ground communication in case of fall back from integrated to stand-alone mode (radar and communication systems are disconnected).
Preconditions
The Flight Centric EC needs to contact the Flight Crew and the connection between radar HMI and communication system is not working.
Postconditions: Success end state
Communication with the Flight Crew is established.
Trigger
The Flight Centric EC needs to contact the Flight Crew, for example to answer the initial call or a request of the Flight Crew or to issue a clearance or instruction.
Main Flow
- The Flight Centric EC identifies the flight he wants to talk to.
- He clicks on the respective callsign on the Voice Communication System panel (to activate the corresponding transmitter/frequency). Note: After clicking on the VCS panel the systems may need up to one second until the Flight Centric EC is able to send a radio message using push-to-talk (PTT).
- He pushes the push-to-talk (PTT) button of the headset to initiate the voice communication with the pilot