If the mission bus control is lost, what happens to navigation emitter control?

When the mission bus control is lost, navigation emitter control becomes unavailable from the navigation emitter control and navigation sensor pages, specifically the TACAN/ADF section. This occurs because the mission bus is responsible for transmitting data and commands between various systems within the aircraft. Without a functioning mission bus, the communication flow necessary for controlling navigation emitters is disrupted. As a result, pilots would not be able to access or manage the navigation emitter settings from the associated control pages, inhibiting their ability to input or change navigation information effectively. Understanding this functionality is crucial for ensuring pilots recognize the implications of mission bus failure and can adapt their navigation strategies accordingly.