What is the term used to name what happens when an uplink or down link is broken?

• A. Link outage
• B. Communication failure
• C. Signal drop
• D. Lost link

Answer: (D)

Lost link is the standard way to describe the situation where the control or data channel to the drone is no longer available. It applies whether the uplink (ground control to aircraft) or the downlink (aircraft to ground control) is broken. This term precisely identifies the state of complete communication loss, which is why it’s used in practice and in safety procedures. Other options are less specific: a link outage could imply a temporary hiccup, signal drop suggests a weakening signal rather than a full loss, and communication failure is too broad to pinpoint the link itself. When a lost link is detected, predefined failsafe actions—like returning home or hover—are typically invoked according to the system’s settings.