The interface is an essential piece of the communication infrastructure. The interface is the portion of the system used to connect one system to other systems. So a closed system uses its interface to react or communicate with another closed system. The term “interface” is primary associated with computer technology. It refers to various hardware interfaces that are used to link two systems to each other physically. Within aviation we are faced with more complex and diversified digital landscape than ever before, thus it is importent that all systems are interlinked properly and human-to-system-interaction is reduced.